STANDARDS AUSTRALIA/STANDARDS NEW ZEALAND NZS 3000-2007 Amdt 1-2009 Electrical... · ISBN 0 7337 9203 0 AS/NZS 3000/Amdt 1/2009-07-30 STANDARDS AUSTRALIA/STANDARDS NEW ZEALAND Amendment

ISBN 0 7337 9203 0

AS/NZS 3000/Amdt 1/2009-07-30

STANDARDS AUSTRALIA/STANDARDS NEW ZEALAND

Amendment No. 1

to

AS/NZS 3000:2007

Electrical installations (known as the Australian/New Zealand Wiring Rules)

REVISED TEXT

The 2007 edition of AS/NZS 3000 is amended as follows; the amendments should be inserted in the

appropriate places.

SUMMARY: This Amendment applies to the Preface, Contents, List of Tables, List of Figures, Clauses 1.4.53,

1.4.63, 1.4.65, 1.5.6.3, 1.7.2, 1.7.4, 2.2.1.2, 2.2.2, 2.3.6.3, 2.4.4, 2.5.1.1, 2.5.3.1, 2.6.2.4, 2.6.3.1, 2.6.3.2,

2.6.3.4, 2.7.2, 2.9.1, 2.9.2.2, 2.9.2.3, 2.9.2.4, 2.9.2.5, 2.9.3.4, 2.9.5.1, 2.9.5.6, 3, 3.5.2, 3.7.2.7, 3.7.3, 3.8.2,

3.8.3.2, 3.9.4.3, 3.9.4.4, 3.9.8.1, 3.9.8.4, 3.9.9.2, 3.10.3.9, 3.11.3.1, 3.11.4.4, 3.11.4.6, 3.12.2.1, 3.8.3.3,

4.4.2.2, 4.5.1.2, 4.5.2.3, 4.13.3.1, 5.3.3.1.2, 5.3.3.2, 5.3.3.4, 5.3.6.3, 5.4.3, 5.5.5.5, 5.6.2.5, 6.2.4.2, 6.3.1,

6.3.4.5, 6.4.4.5, 6.7.1, 7.2.1.4, 7.2.4.3, 7.3.8.1.2, 7.3.8.3.3, 7.6.2.1, 7.6.3, 7.8.2.3, 7.8.2.4, 8.1.2, 8.3.9.3,

8.3.10.1, 8.3.10.2, Paragraphs A1, A2, B3.2.2.1, B3.2.2.3, B4.1, B4.3, B4, B4.3, B4.6, B5.2.2, B5.2.3,

C2.3.2.3, C2.4.2.1, C2.4.2.2, C3.1, C5.1, D2.2, D4.2.1, D4.2.2, E2.2, E2.3, E3.3, and Appendix K, Tables 3.5,

3.7, 5.1, 5.2, 6.2, 8.2, B1, C1, C9, C10, C11, D2, D13(a), H2 and Figures 2.19, 3.1, 3.2, 3.10, 3.11, 3.13, 3.14,

3.16, 4.7, 5.3, 5.5, 6.5, 6.7, 6.9, 6.10, 6.11, 7.2, 7.3, 7.4, 7.5, 7.6, B1, B4 and D1.

Published on 30 July 2009.

Approved for publication in New Zealand on behalf of the Standards Council of New Zealand on 10 July 2009.

Page 2 Preface

Delete the first paragraph and replace with the following:

This Standard was prepared by the Joint Standards Australia/Standards New Zealand Committee EL-001, Wiring Rules, to supersede, in Australia/New Zealand, AS/NZS 3000:2000, Electrical installations (known as the Australian/New Zealand Wiring Rules).

Page 5 Preface (xviii)

Delete the text and replace with the following:

(xviii) The location of underground cables must be marked at entry to or exit from a structure or recorded on a map.

Page 5 Preface (xxiii)


(xxiii) Illustrations of the multiple earthed neutral (MEN) system have been improved and clarification of the relationship of the MEN system to the IEC systems has been added.

Page 6 Preface (xliii)


(xliii) Verification of earth fault-loop impedance for socket-outlet circuits not protected by an RCD is now a mandatory test for both Australia and New Zealand.

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Page 11 Contents

Mark Appendix K as ‘deleted’.

Page 14 List of Tables

Mark Figures K1 and K2 as ‘deleted’.

Page 16 List of Figures

1 For Figure 3.1, change the title to ‘SINGLE-PHASE CABLES’.

2 For Figure 3.2, change the title to ‘MULTIPHASE CABLES’.

3 Mark Figure K1 as ‘deleted’ (page 18).

Page 31 Clause 1.4.53 Exception (v)

In the first line, add the words ‘or hinged’ after ‘removable’.

Page 33 Clause 1.4.63

Insert the following as Item (c) and renumber Items (c) and (d) as (d) and (e):

‘(c) The neutral bar or link in a switchboard without an MEN connection where the active supply to the switchboard has been isolated.’


Add at the end of the clause ‘or to the earthing system of the source of supply.’

Page 46 Clause 1.5.6.3

In the first line, replace the word ‘protection’ with ‘limitation’.

Page 52 Clause 1.7.2(g)

Delete the words ‘and in accordance with the product specification’.

Page 53 Clause 1.7.4(b)

1 In the first line, replace the word ‘enhanced’ with ‘additional’.

2 Alter ‘present’ to ‘presents’ in the 2nd line of the sentence.

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2.2.1.2 Common neutral

Each single-phase circuit, and each multiphase circuit that requires a neutral conductor for the operation of connected equipment, shall incorporate a neutral conductor.

A common neutral conductor may be used for two or more circuits subject to the following conditions:

(a) The continuity of the common neutral conductor shall not depend on connections at the terminals of electrical equipment, including control switches.

(b) Final subcircuits shall be controlled and protected by linked circuit-breakers or linked switches.

(c) The neutral conductor shall be marked at switchboards to identify the associated active conductors in accordance with Clause 2.9.5.5.

(d) Alternative sources of supply to a single appliance (such as a water heater, space heater or air conditioner) shall have a common isolating switch.

NOTES:

1 Typical applications for common neutrals include groups of single-phase lights arranged across multiphase supply, and separate components of a single-phase appliance, such as a cooking unit

2 Looping of a common neutral conductor at terminals of equipment supplied from different circuits may cause the load side neutral conductor potential to rise to full line voltage and create a dangerous live situation when disconnected for repair or replacement of the equipment.

3 This Clause does not preclude connection of a common neutral in a junction box

The current-carrying capacity of a common neutral shall be determined from the current-carrying capacity of the associated active conductors in accordance with Clause 3.5.2.


Delete the NOTE and replace with the following:

NOTE: Guidance on the determination of maximum demand is provided for basic electrical installations in Appendix C.


Delete the last paragraph and replace with the following:

‘A device located remotely from the electrical equipment it controls, which is used for shutting down for mechanical maintenance, shall be provided with facilities for securing it in the open position.’

Page 73 Clause 2.4.4 (a)

Replace the words ‘Clauses 2.4.2, 2.6, 3.9.4.4 or 6.2.4’ with the words ‘Clause 1.5.6’.

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In NOTE 2 replace ‘Clause 2.5.5.2’ with ‘Clause 2.5.5.3’.


In NOTE 3, replace ‘Clause B3.2.1’ with ‘Paragraph B3.2.1’.


Delete the entire clause and replace with the following:

2.6.2.4 Arrangement

Where additional protection of final subcircuits is required, in accordance with Clause 2.6.3, the final subcircuits shall be arranged as follows:

(a) In all electrical installations where—

(i) the number of RCDs installed exceeds one; and

(ii) more than one lighting circuit is installed

lighting circuits shall be distributed between RCDs

(b) In residential installations—

(i) not more than three final subcircuits shall be protected by any one RCD; and

(ii) where there is more than one final subcircuit, a minimum of two RCDs shall be installed.

NOTE: These arrangements are intended to minimize the impact of the operation of a single RCD.


Delete the NOTE following (b) and replace with the following:

NOTE: For the purpose of this Clause, combination fan, light and heater units, exhaust fans and ceiling sweep fans are all regarded as lighting points.


Add the following new exception:

3 This requirement need not apply to a socket-outlet or a connecting device specifically for the connection of a fixed or stationary electric cooking appliance, such as a range, oven or hotplate unit provided that—

(a) the socket-outlet is located in a position that is not likely to be accessed for general purposes; and

(b) the socket-outlet is clearly marked to indicate the restricted purpose of the socket-outlet and that RCD protection is not provided.

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Delete the entire clause and replace with the following:

‘2.6.3.2 Other electrical installations

2.6.3.2.1 Australia

Additional protection by RCDs with a maximum rated residual current of 30 mA shall be provided for—

(a) final subcircuits supplying socket-outlets where the rated current of any individual socket-outlet does not exceed 20 A; and

(b) final subcircuits supplying lighting where any portion of the circuit has a rated current not exceeding 20 A; and

(c) final subcircuits supplying directly connected hand-held electrical equipment, e.g. hair dryers or tools.

NOTE: The final subcircuits referred to in Item (b) include, without limitation, those supplying the following equipment:

(a) External lighting installations, such as bollard-type luminaires.

(b) Illuminated signs.

(c) In-ground lighting.

(d) Ground-mounted lighting for the illumination of public features.

Exception: This requirement need not apply:

1 Where other methods of protection are applied, e.g. a separated supply in accordance with Clause 7.4.

2 Where socket-outlets on the final subcircuit are protected by a socket-outlet RCD.

3 Where specific provisions for electrical installations exist through the application of other Standards, e.g. AS/NZS 3001, AS/NZS 3002, AS/NZS 3003, AS/NZS 3004 and AS/NZS 3012.

4 To special situations referred to in Sections 6 and 7 of this Standard that require RCD protection which shall be provided in accordance with the requirements of the relevant Clause.

5 Where the disconnection of a circuit by an RCD could cause a danger greater than earth leakage current.

6 Where all socket-outlets on a final subcircuit are installed for the connection of specific items of equipment, provided that—

(a) the connected equipment is required by the owner or operator to perform a function that is essential to the performance of the installation and that function would be adversely affected by a loss of supply caused by the RCD operation; and

(b) the connected equipment is designed, constructed and used in such a manner that is not likely to present a significant risk of electric shock; and

(c) the socket-outlet is located in a position that is not likely to be accessed for general purposes; and

(d) the socket-outlet is clearly marked to indicate the restricted purpose of the socket-outlet and that RCD protection is not provided.

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7 To a socket-outlet or a connecting device specifically for the connection of a fixed or stationary cooking appliance, such as a range, oven or hotplate unit.

In these applications the socket-outlet shall be clearly marked to indicate the restricted purpose of the socket-outlet and that RCD protection is not provided. The socket-outlet shall be located in a position that is not likely to be accessed for general purposes.

Additional protection by RCDs with a maximum rated residual current of 30 mA shall also be provided in accordance with the requirements and regulations of legislation, such as Occupational Health & Safety legislation.

NOTE: In areas where excessive earth leakage current could present a significant risk in the event of failure of other measures of protection or carelessness by users, RCDs are designed to provide additional protection against the effects of electric shock by automatically disconnecting supply before serious physical injury can occur.

2.6.3.2.2 New Zealand

Additional protection by RCDs with a maximum rated residual current of 10 mA shall be provided for final subcircuits supplying socket-outlets in areas normally accessible by children in

(a) kindergartens; and

(b) day care centres for pre-school children; and

(c) primary schools.

Exception: This requirement need not apply:

1 Where other methods of protection are applied, e.g. a separated supply in accordance with Clause 7.4.

2 Where socket-outlets on the final subcircuit are protected by a socket-outlet RCD.

3 Where specific provisions for electrical installations exist through the application of other Standards, e.g. AS/NZS 3001, AS/NZS 3002, AS/NZS 3003, AS/NZS 3004 and AS/NZS 3012.

4 To special situations referred to in Sections 6 and 7 of this Standard that require RCD protection which shall be provided in accordance with the requirements of the relevant Clause.


Add the following words at the start of the clause:

‘Where the circuit protection on a switchboard is completely replaced, additional protection by RCDs as required in Clause 2.6 shall be provided for the final subcircuits supplied from that switchboard.’

Page 101 Clause 2.7.2(a)

Delete the words ‘Clause 3.9.9.3’ and replace with ‘Clause 3.9.8.3’.


Remove the italic font and replace with normal font in the third paragraph beginning ‘A main switchboard...’.

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Page 104 Clause 2.9.2.2 (c)(i)

Replace the words ‘the open’ with ‘any’.

Page 104 Clause 2.9.2.2 (c)(ii)

1 Delete the words ‘egress paths’ and replace with ‘emergency exit paths’.

2 Delete the paragraph beginning ‘Doors of a switchroom.....’ and replace with the

following:

‘Doors of switchrooms, or other rooms dedicated to switchboards, shall open in the direction of egress without the use, on the switchboard side of the door, of a key or tool.’

Page 107 Figure 2.19

Delete the figure and title and replace with the following:

> 0.6 m

> 0.6 m

> 0.6 m

FIGURE 2.19 ACCESS TO SWITCHBOARDS—FACING SWITCHBOARDS

Page 107 Clause 2.9.2.3(a)

Delete the words ‘Clause 2.3.3.4’ and replace with ‘Clause 2.3.3.5’.


Delete Exception 4.

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Page 109 Clause 2.9.2.5(j)

Delete the exception and replace with the following:

‘Exception: A switchboard may be installed in the vicinity of an automatic fire sprinkler system if at least one of the following conditions is satisfied:

(A) The switchboard is provided with degree of protection IPX4, in accordance with AS 60529.

(B) The switchboard is provided with a shield to prevent water spraying on it.

(C) Sprinkler heads that could project water on the switchboard are provided with suitable deflectors.

(D) Sprinkler heads are of the dry type.’

Page 110 Clause 2.9.2.5(k)

Delete the entire NOTE and replace with the following:

NOTES:

1 The following situations may give rise to a hazardous area:

(a) Bottled gas cylinders with an aggregate gas capacity exceeding 30 m3.

(b) Gas-tank filling or discharge connections.

(c) Pressure relief device discharge points fitted to gas installations.

2 Refer to AS/NZS 2430.3 for information regarding hazardous areas.

3 An example of a hazardous area presented by a bottled gas cylinder is shown at Figure 2.20. For an insitu filled gas cylinder larger distances are required.


Add the words ‘or where each device is clearly marked to indicate the off position’ at the end of the exception.


Delete the text of the clause and replace with the following:

‘All equipment installed on a switchboard shall be identified in accordance with the requirements of Clauses 2.9.5.2 to 2.9.5.6.

NOTE: See Clauses 2.3.3 and 2.3.4 for the marking requirements of main switches and additional isolating switches.’


In the first line of the first paragraph, replace the word ‘that’ with the word ‘the’.

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Delete Exception 2, Exception 3 and sub-clause (c) and replace with the following:

‘2 The neutral conductor of a multiphase circuit may have a current-carrying capacity lower than that determined by this Clause, provided that a detection device is fitted and arranged so that the neutral current cannot exceed the current-carrying capacity of the neutral conductor.

3 The neutral conductor of a multiphase circuit may have a current-carrying capacity less than that of the largest associated active conductor, provided that the predominant load consists of multiphase equipment and the current-carrying capacity is not less than the maximum out of balance current, including any harmonic component.

(c) PEN conductors The minimum size of a combined protective earth and neutral (PEN) conductor of consumers mains, or of a submain to an outbuilding of an electrical installation forming a separate MEN installation in accordance with Clause 5.5.3.1, shall—

(i) comply with the requirements of Item (a) or Item (b), as appropriate; and

(ii) be not less than that of an earthing conductor as required by Clause 5.3.3.’


In the NOTE, delete the words ‘(see Clause 3.7.9.1)’ and replace with ‘(see

Clause 3.7.2.9.1)’.


In Exception (d), delete the words ‘Clause 3.10.1.1’ and replace with ‘Clause 3.10.1.2.’


In the third paragraph, beginning ‘Single-core cables...’ add the word ‘continuously’ after the word ‘identified’.


1 In Item (a), add the word ‘flexible’ before the word ‘cables’.

2 Add the following Item (c):

‘(c) insulated aerial conductors are identified by a number of small longitudinal ribs around the circumference, the neutral conductor shall be identified by multiple longitudinal ribs evenly spaced around the entire circumference and length of the conductor that clearly distinguish it from the other conductors.’


In the first and second paragraphs delete the words ‘flexible cords and’.

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Page 135 Figure 3.1

Change Figure caption to ‘SINGLE-PHASE CABLES’:

Page 135 Figure 3.2

1 In the left heading delete ‘AND FLEXIBLE CORDS’.

2 Replace the right heading with ‘EUROPEAN CABLES’.

3 Remove the dividing line under the heading.

4 Delete the figure and caption and replace with the following:

Red

Whi te

Phase /L ine 1 ..........................

........................ Phase /L ine 2

Brown

Black

Black

Green / Ye l low

....................................

.............

Neutra l

Ear th

Blue

Blue ............................. Phase /L ine 3 Grey

Green /ye l low

FIGURE 3.2 MULTI-PHASE CABLES


1 Add the following sub-heading directly under the main heading:

‘3.9.4.3.1 Prohibited locations’.

2 Add the following words at the end of the NOTE:

‘are shown in Figures 3.6 and 3.7.’

3 Add the following sub-heading to the paragraph commencing ‘Wiring systems shall be protected’ under Figure 3.6:

‘3.9.4.3.2 Protection required’.


1 Change the second clause reference from ‘3.9.4.3’ to ‘3.9.4.3.2’.

2 In Item (c), delete the words ‘in lieu of mechanical protection’.


In the first paragraph, replace the words ‘Clauses 3.9.8.2 to 3.9.8.5’ with the words ‘Clauses 3.9.8.2 to 3.9.8.4’.


In Item (b), second paragraph, replace the words ‘Clause 3.11.4’ with ‘Clause 3.11.5’.

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1. In Item (c), second paragraph, delete the word ‘underground’ before the word ‘telecommunications’.

2. In Item (c), NOTE (c), delete the words ‘in Figures 3.8 and 3.9’, and replace with the words ‘in Figure 3.9’.


At the end of Item (a) delete the words ‘, in accordance with Clause 3.3’


In the NOTE, delete the words ‘Clause 3.9.9.2’ and replace with ‘Clause 3.9.9.3’.


In Item (c), add the word ‘sheathed’ before the word ‘cables’.

Page 157 Table 3.5

Delete the heading of Column 5 and replace with the following:

‘Fibre cement conduit encased in concrete’


Add the following words to the end of the line under Item (b):

.... ‘or below any poured concrete laid on that surface (see Figures 3.10 to 3.16).’


Delete the figure and replace with the following:

75 mm (min imum) cont inuous poured concreteover underground cable pos i t ion

Cable bedding,see Note

Marker tape

300

50

150

50Categor y A wir ing system f rom Table 3.5

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Ground leve l no cover ing on sur face of the ground or less than 75 mm cont inuous poured concrete

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500

50

50Categor y A wir ing system f rom Table 3.5




75 mm (min imum) cont inuous poured concreteover underground cable pos i t ion

Mechanica lprotect ion system(e.g. po lymer ic cablecover str ip as shown )

Marker tape

150

300

150 min.

75


50

50

Categor y B wir ing system f rom Table 3.5

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Ground leve l no cover ing on sur face of the ground or less than 75 mm cont inuous poured concrete

Marker tape

250

500

Mechanica lprotect ion system

150 min.

75


50

50

Categor y B wir ing system f rom Table 3.5


As the scaling of this figure was too large, it is reproduced here in the correct size—

Categor y C wir ing system f rom Table 3.5

50

ConcreteChase cut in rock

Marker tapeSol idrock


Delete the text of this clause and replace with the following:

To minimize damage to wiring systems installed underground during manual or mechanical excavation works, the location of underground wiring shall be marked or recorded as follows:

(a) Permanent cable marker signs shall be provided to indicate the point where a cable enters or leaves a structure; or

Exception: Cable entry signs need not be provided where the position of underground cable entry into the ground is obvious.

(b) The route of any underground cable shall be recorded on a plan to enable the location of the cable to be determined in the future. This plan shall be located at the switchboard from which the circuit originates. The plan locating the consumers mains shall be kept at the main switchboard of the installation to which it is connected.

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Exception: Marking of underground wiring is not required within the confines of a building.

Page 164 Table 3.7

Delete the heading of Column 3 and replace with the following:

‘Minimum separation of conductive enclosures to low voltage electrical earthing electrode1

’



‘Aerial conductors shall be insulated in the following situations:

(a) For any conductor span that is attached to a building or structure.

Exception: This requirement need not apply to aerial conductors between and supported by two independent poles or similar independent supports.

(b) For any conductor span within arms reach of any building, building opening or structure.

(c) Above areas where sailing craft or irrigation pipes are used (see Table 3.8).

(d) In areas declared by the responsible Fire Authority as being subject to bushfires, where required by the regulatory authority or the electricity distributor.’


In the last paragraph commencing ‘Where socket-outlets are installed’ last line, replace the word ‘not’ with the word ‘that’.


In the ‘exception’, correct the spelling of the word ‘permitted’.


1 Add new NOTE 3 as follows:

‘3 In New Zealand, additional information is provided in NZECP 54:2001

entitled ‘New Zealand Code of Practice for the installation of recessed

luminaries and auxiliary equipment. Published by Energy Safety Service,

Ministry of Consumer Affairs, Wellington, NZ’.

2 Add a box in the margin.

NZ

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Page 186 Figure 4.7


Thermal insu lat ion

Combust ib le bui ld ing e lement above f i t t ing

Recessed lumina i re

C

50 mm AB

TransformerBarr ier requi red forloose f i l l insu lat ion

or loose combust ib lemater ia ls

Combust ib le bui ld ingstructura l member


At the end of Item (a)(ii), remove the words ‘; or’.

Page 211 Clause 5.3.3.1.2

Delete the last paragraph on the page beginning ‘Where the summation of cross-sectional areas exceeds............’

Page 213 Table 5.1

Add a new row at the end of the table to read:

>630 ≥25% of active size†

≥25% of active size†


1 Delete the first two paragraphs and replace with the following:

‘Where the main earthing conductor connects the main earth terminal to an electrode (arrangement depicted in Figure 5.1), the conductor shall be determined from Table 5.1 in relation to the cross-sectional area of the largest active conductor of the consumers mains.

The cross-sectional area of such a copper main earthing conductor shall be not less than 4 mm2 and need not be greater than 120 mm2.’

2 Add the following paragraph and NOTE, after the exceptions:

‘Where the conductor connects the main earth bar to an earth bar or link within a substation (arrangement depicted in Figure 5.2), the conductor shall be determined from Table 5.1 or by calculation.

NOTE: In this application the main earthing conductor forms part of the earth fault current path and its size needs to be determined based on the prospective fault current level and duration.’


At the end of the Exception to Item (a), change ‘1 mm2’ to ‘1 mm2’.

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Page 217 Table 5.2

In the row ‘Copper cable’, column 3, change entry under ‘Minimum dimensions’ to ‘25 mm2’.


Align the box with the text in (ii).


In Item 1 of the ‘exceptions’ add the following words to the end of the sentence: ... ‘and Zone 0 of fountains and water features installed in accordance with Clause 6.4.4.5’.

Page 225 Figure 5.3


Anyone

Subci rcu i tssuppl iedf rom mainswi tchboard

Anyone

*5.5.2.1(a )

*5.5.2.1(d )

*5.5.2.1(b )

Anyone

DB1DB2 Active conductors for

DB2 shal l be suppl iedf rom DB1

*5.5.2.1(a )

*5.5.2.2.3*5.5.2.1(d )

*5.5.2.1(b )

Anyone

DB*5.5.2.1(a )

Ear the lectrode*5.3.6 and*5.5.1.2 and*5.5.1.3

*5.5.2.1(d )

*5.5.2.1(b )

*5.5.2.1(c )

*5.5.2.1(c )

*5.5.2.1(d )

*5.5.2.1(b )

Anyone

Subci rcu i tssuppl iedf rom DB

Subci rcu i tssuppl iedf rom DB2

*5.5.2.1(d )

*5.5.2.1(b )

Mainswi tchboard

Main ear th baror termina l /connect ion

Main neutra lconductor

Mainneutra l bar

DB

*

LEGEND:

Clause numberProtect ive ear th ing conductorEar th ing connect ion at equipmentor exposed conduct ive par tD istr ibut ion boardSwitchboard ear th baror termina l /connect ion

===

==

MENconnect ion

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At the end of Item (b), change the measurement to ‘25 mm2’.

Page 233 Figure 5.5


Non-conduct ivewater p ip ingunder f loor andin wal l cav i t y.

Interna l access.

Equipotent ia lbonding notrequi red.

Non-conduct ivewater p ip ingf rom ground toconduct ive p ip ing.

Interna l access.

Equipotent ia lbonding notrequi red.

LEGEND:= Conduct ive water p ip ing= Non-conduct ive water p ip ing

*

**

NOTE: Bonding recommended i f conduct ive path ex ists f rom tap to ground through bui ld ing mater ia ls


1. Delete the text of the clause and replace with the following:

‘Any conductive reinforcing within a concrete floor or wall of a room containing a shower or bath shall be bonded to the earthing system of the electrical installation.

An equipotential bonding conductor, in accordance with Clause 5.6.3, shall be connected between the reinforcing material and any part of the earthing system.

NOTES:

1. This requirement is intended to avoid any potential differences that may

occur between conductive material connected to, or in contact with, the

electrical installation earthing system or earthed electrical appliances and

the concrete floor or wall.’

2. Renumber existing notes 2,3,4.

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Delete Item (b) and replace with the following:

‘(b) Zone 2 Socket-outlets installed in Zone 2 shall be—

(i) of the automatic switching type incorporated in a shaver supply unit complying with AS/NZS 3194; or

(ii) protected by an RCD with a fixed rated residual current not exceeding 30 mA and enclosed in a cupboard that maintains the enclosure of the socket-outlet during normal operation of the connected equipment.’

Page 251 Figure 6.5


= Zone 1

= Zone 2

= Zone 3

= Zone 0

LEGEND:

Zone 3

Fixed par t i t ion

2.4

Zone 2Zone 2

0.6

Zone 0

Zone 1

b

b = width of bar r ie rr1 = 0.6 a b

r1r1

aa

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Page 253 Figure 6.7


Barr ie rBarr ie r

Zone 3

2.4

= Zone 1

= Zone 2

= Zone 3

= Zone 0

LEGEND:0.6

0.6

Zone 2

Zone 0

Fixed showerplumbing connect ionFixed showerplumbing connect ionFixed showerplumbing connect ionFixed showerplumbing connect ion

Zone 1

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Page 255 Figure 6.9


0.60.6

1.2

2.4

2.4

Zone 1 Zone 2

Zone 2

Zone 3

Zone 3

= Zone 2

= Zone 3

= Zone 1

LEGEND:

Fixed showerplumbing connect ion

Barr ier

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Zone 0

Zone 20.150.4

0.15



Zone 0

Zone 2

0.5

1.0

0.5

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1. Modify the last paragraph by ending it at the word ‘zones’ then start new paragraph

‘Because of the nature of these locations certain methods of protection against electric shock are not permitted.

2. Add an additional paragraph as follows:

The requirements for swimming pools also apply to electrical installations in areas of natural waters, lakes in gravel pits and coastal and similar areas, especially those intended to be occupied by persons for swimming, paddling and similar purposes.’


1 In Item (a)(iii), add ‘each luminaire, appliance or other item of electrical equipment is’ before ‘supplied’.

2 In Item (a)(iii) (A), delete the NOTE and replace with the following:

‘NOTE: An individual source may be an individual isolation transformer or an

individual winding on an isolation transformer having a number of secondary

windings, provided that the output complies with Clause 7.5.3.’

3 In Item (d), add the following NOTE after the text.

‘NOTE: The use of a purpose made pump and installation to the

manufacturers’ instructions complying with the requirements of

AS/NZS 60335.2.41 for each zone is deemed to comply with the requirements

of this clause.’

Page 262 Table 6.2

Delete the table and replace with the following:

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TABLE 6.2

GUIDANCE ON THE SELECTION AND INSTALLATION

OF ELECTRICAL EQUIPMENT FOR SWIMMING POOLS, PADDLING POOLS AND SPA

POOLS OR TUBS

Equipment Zone 0 Zone 1 Zone 2

Clause 6.3.4.3 Socket – Outlets

Not permitted Not permitted for general use.

For pool equipment only—

(i) IPX5; and

(ii) (A) ≥0.45 m high; and ≥1.25 m from internal rim; or

(B) under and ≥0.5 m from edge of fixed continuous horizontal barrier ≥1.25 m wide; and

(iii) (A) separated supply; or

(B) SELV or PELV supply; or

(C) RCD protection

IPX4; and

(i) separated supply; or

(ii) SELV or PELV supply; or

(iii) RCD protection

Clause 6.3.4.4 Switches/ accessories

Not permitted IPX5 IPX4

Clause 6.3.4.5 (a), (b) and (c) Appliances, Luminaires and other equipment

IPX8; and specifically for use; and 12V a.c./30 V d.c. SELV or PELV supply from source outside zone

No earth

IPX5; and

(i) SELV or PELV supply; or

(ii) Class II construction (double or reinforced insulation); or

(iii) Class I construction (earthed conductive parts), fixed in position and RCD protection

IPX4; and

(i) SELV or PELV supply; or

(ii) Separated supply; or

(iii) Class II construction (double or reinforced insulation); or

(iv) Class I construction (earthed conductive parts), and RCD protection

Clause 6.3.4.5 (d) Heating cable systems

Not applicable Permitted where embedded in the floor area under the Zone and protected to Clause 4.10.5

As for Zone 1

Clause 6.3.4.6 Switchboards

Not permitted Not permitted Not permitted

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1. Replace Item (a)(iii) to read:

(iii) each luminaire, appliance or other item of electrical equipment is supplied—

2. Replace the NOTE under Item (A) to read:

NOTE: An individual source may be an individual isolation transformer or an individual winding on an isolation transformer having a number of secondary windings, provided that the output complies with Clause 7.5.3.

3. Add the following NOTE under Item (b):

NOTE: The use of a purpose made pump and installation to the manufacturers’ instructions complying with the requirements of AS/NZS 60335.2.41 for the relevant zone is deemed to comply with the requirements of this Clause 6.4.4.5.


In the NOTE—

1. Add the words ‘;or’ to the end of Item (d)

2. Add Item (e) as follows:

‘(e) car wash bays and the like.’


Delete the clause and replace with the following:

For the purposes of this Clause 7.2, lifts shall be deemed to include electrically controlled lifts that may convey persons, but do not include any conveying device from which passengers may safely alight should the apparatus stop at any point in its travel.

Exception: A lift in a single private residence that is installed in accordance with AS/NZS 1735.18 need not comply with the requirements of this Clause 7.2.

NOTE: Although compliance with the AS 1735 series is not a requirement of this

Standard, regulatory authorities may require compliance and may have additional

requirements.


In the first paragraph, add the words ‘and socket-outlets’ after the words ‘lighting equipment’.


Delete the last paragraph and the NOTE and replace with the following:

‘AS/NZS 3010 provides guidance for connection and switching of alternative supplies and compliance with AS/NZS 3010 is deemed to satisfy Clause 7.3.8.1.

NOTE: Typical switching arrangements are shown in Figures 7.2, 7.3 and 7.4.’

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Page 296 Figure 7.2

Delete the caption and replace with the following:

FIGURE 7.2 EXAMPLE OF CONNECTION OF AN ALTERNATIVE SUPPLY TO A SWITCHBOARD WITH A LOCAL MEN CONNECTION (THREE POLE/FOUR POLE

CHANGEOVER)

(Symbols are explained in Table J1.)

Page 297 Figure 7.3

Delete the figure and caption and replace with the following:

L1 L2 L3 N E

L1 L2 L3 N

E -BAR

N-BAR

EE

MEN

To load

NORMAL SUPPLYGENERATING

SET

G

L3

L2

L1

N

Changeover Device

GeneratorOvercurrentProtection

(whereinstalled)

FIGURE 7.3 EXAMPLE OF CONNECTION OF AN ALTERNATIVE SUPPLY TO A SWITCHBOARD WITH A LOCAL MEN CONNECTION (THREE POLE/THREE

POLE CHANGEOVER)


Page 298 Figure 7.4

Delete the caption and replace with the following:

FIGURE 7.4 EXAMPLE OF CONNECTION OF AN ALTERNATIVE SUPPLY TO A SWITCHBOARD WITH A LOCAL MEN CONNECTION BY MEANS OF A PLUG

AND SOCKET


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Page 299 Figure 7.5


Main swi tchboard

Main swi tch(Gr id supply )

Consumersmains

( to gr id anddistr ibutor’s

network)

Main swi tch andovercurrent protection

(Solar supply )

Ci rcu i ts protectedby RCDs

Circu i ts notprotected by

RCDs

Iso lat ion dev ice(e.g. swi tch or fuse

or other dev ice )

Solar ( PV ) ar ray

Iso lat ion dev ice

Inverter with integralgrid protection device

An RCD is not to be placed between the consumers mains

and the solar supply (see AS 4777).

NOTE: Although a solar energy source is shown other sources may also be used.

FIGURE 7.5 EXAMPLE OF CONNECTION OF A GRID-CONNECTED INVERTER



‘The method of connection of a stand-alone system shall be in accordance with the AS 4509 series of Standards.

NOTE: A typical stand-alone connection is shown in Figure 7.6 for an installation with a switchboard including a local MEN connection.’

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Page 300 Figure 7.6


L1 L2 L3 N E

Ear the lectrode

G

L3

L2

L1

N

To load

Localsource

overcurrentprotect ion

(whereinsta l led )

Local source suchas generat ing set or

inver ter as par t ofa stand-a lone

power system toAS 4509

Protect ive ear thto f rame of source

MENconnect ion

Ear th bar

Neutra l bar

Main swi tchboard

Mainswi tch

FIGURE 7.6 EXAMPLE OF CONNECTION OF A STAND-ALONE SYSTEM TO A SWITCHBOARD WITH A LOCAL MEN CONNECTION



Delete the text and NOTE and replace with the following:

‘In Australia electrical installations and those portions of electrical installations operating at high voltage shall be installed in accordance with AS 2067.’


Delete the first paragraph and replace with the following:

‘When designing high voltage electrical installations, consideration must be given to a range of issues that are more significant than those for electrical installations less than 1 kV.’


Delete the heading and text of the clause and replace with the following:

7.8.2.3 Transportable structures and vehicles including their site supplies

‘Electrical installations in transportable structures and vehicles including their site supplies shall comply with AS/NZS 3001.’

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Delete the text and NOTES of this Clause and replace with the following:

7.8.2.4 Marinas and recreational boats

Electrical installations in marinas and recreational boats shall comply with AS/NZS 3004.

NOTES:

1 AS/NZS 3004 is a two-part Standard as follows:

(a) AS/NZS 3004.1 provides requirements for electrical installations on marinas; and

(b) AS/NZS 3004.2 provides requirements for electrical installations in recreational boats.

2 In Australia, for electrical installations on commercial vessels, refer to the National Marine Safety Committee’s National standard for commercial vessels Part C: Design and construction—Section 5: Engineering—Subsection 5B: Electrical (NSCV C 5B).


Alter the first paragraph of the NOTE to read:

NOTE: Additional visual inspections and testing may be required for specific installations, such as separated supplies, SELV and PELV installations, electromedical installations, transportable structures and vehicles and marinas, etc.


At Item (b), Paragraph beginning ‘...Measurements should be carried out’, delete

the words ‘e.g. at a socket-outlet’ and replace with ‘at the socket-outlet’.

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Page 325 Table 8.2

Delete the TABLE and replace with the following:

TABLE 8.2

MAXIMUM VALUES OF RESISTANCE

Conductor size Circuit breaker

Active Earth

Protective

device

rating Type B Type C Type D Fuses

mm2

mm2

A Maximum resistances

Rphe Rph Re Rphe Rph Re Rphe Rph Re Rphe Rph Re

1 1 6 6.14 3.07 3.07 3.28 1.64 1.64 1.96 0.98 0.98 7.36 3.68 3.68

1 1 10 3.68 1.84 1.84 1.96 0.98 0.98 1.18 0.59 0.59 4.10 2.05 2.05

1.5 1.5 10 3.68 1.84 1.84 1.96 0.98 0.98 1.18 0.59 0.59 4.10 2.05 2.05

1.5 1.5 16 2.30 1.15 1.15 1.22 0.61 0.61 0.74 0.37 0.37 1.96 0.98 0.98

2.5 2.5 16 2.30 1.15 1.15 1.22 0.61 0.61 0.74 0.37 0.37 1.96 0.98 0.98

2.5 2.5 20 1.84 0.92 0.92 0.98 0.49 0.49 0.58 0.29 0.29 1.34 0.67 0.67

4 2.5 25 1.48 0.57 0.91 0.78 0.30 0.48 0.47 0.18 0.29 1.05 0.40 0.65

4 2.5 32 1.15 0.44 0.71 0.62 0.24 0.38 0.37 0.14 0.23 0.82 0.32 0.50

6 2.5 40 0.92 0.27 0.65 0.49 0.14 0.35 0.30 0.09 0.21 0.61 0.18 0.43

10 4 50 0.74 0.21 0.53 0.39 0.11 0.28 0.24 0.07 0.17 0.46 0.13 0.33

16 6 63 0.59 0.16 0.43 0.32 0.09 0.23 0.19 0.05 0.14 0.36 0.10 0.26

NOTES:

1 The values, which have been rounded to two decimal places, are approximately 64% of the

values given in Table 8.1. This is because of the following:

(a) A reduction to 80% (0.8) because of a conductor temperature of 20°C.

(b) A further reduction as the length of circuits given in Table B1 were calculated using 80%

(0.8) of supply voltage. The further reduction assumes that 20% of the impedance is

associated with the supply transformer. This should be taken into account if in doubt.

Therefore, 0.8 × 0.8 = 0.64 (64%).

2 Resistances for active conductors (Rph) and protective earthing conductors (Re) are also

provided.


Delete the first two paragraphs and replace with the following:

Tests shall be performed on each final subcircuit protected by an RCD to verify that the RCD operates to disconnect the designated circuit.

In Australia, where supply is available, the function of the RCD shall be verified by the operation of the integral test device, or by the use of special test equipment.

The NOTES remain without change.


Transpose the last paragraph to be the first paragraph of the clause.

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Page 328 Paragraph A1

1 AS/NZS 3001, change the title to—

Electrical installations—Transportable structures and vehicles including their site supplies.

2 Delete AS/NZS 3004 and replace with—

3004 Electrical installations—Marinas and recreation boats 3004.1 Part 1: Marinas 3004.2 Part 2: Recreational boats installations


Add the following to the list of ‘AS/NZS’ references:

60335 Household and similar electrical appliances 60335.2.41 Safety—Particular requirements for pumps


Add the following to the list of ‘IEC’ references:

IEC/TR 61200-413 Electrical installation guide—Clause 413. Explanatory notes to measures of protection against indirect contact by automatic disconnection of supply

Page 335 Figure B1


Safety ser v ices c i rcu i ts( f i re, evacuat ion and l i f ts )

HV/LV supply transformer by—a) d istr ibutor where ex terna l to premises ; orb ) e i ther d istr ibutor or customer wi th in premises

Suppy to main swi tchboard by—a) d istr ibutor’s network; orb ) ser v ice l ine ; orc ) consumer mains

Distr ibut ion swi tchboard(mechanica l ser v ices )

D istr ibut ionswitchboard

Distr ibut ionswitchboard

Fina l subci rcu i tsto pumps, ch i l le rs etc.

F ina l subci rcu i tsto genera l l ight ing, power and etc.

Submains

Main swi tchboard

Submains

Genera l power, l ight ing etc

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Page 337 Paragraph B3.2.2.1

Delete the space between ‘2.’ and ‘1’ in the first line of the text.

Page 338 Paragraph B3.2.2.3

At the end of the first paragraph of text, delete ‘0.9 IN’ and replace with ‘0.9 IZ’.

Page 338 Paragraph B4.1

At the end of Item (c) change reference to ‘Clause 8.3.9.3’.


1. In both places in the clause where ‘IEC 61200-413’ is referenced, change this to ‘IEC/TR 61200-413’.

2. In the last line of the last paragraph of the clause, before Figure B4, change reference

of ‘Lp’ to ‘Lp’.

Page 340 Figure B4

In the caption, where ‘IEC 61200-413’ is referenced, change this to ‘IEC/TR 61200-413’


Delete Item 2, and replace with the following:

(2) The value m is the ratio of the cross-sectional area of the phase conductor compared to the cross-sectional area of the protective earthing conductor in the circuit considered.


In the first line delete ‘Clause 8.3.8’ and replace with ‘Clause 8.3.9’.

Page 346 Paragraph B5.2.2

In the first NOTE, delete reference to ‘Paragraph B4.4’ and replace with ‘Paragraph B4.5’.

Page 346 Paragraph B5.2.3

In the first line of text, delete the word ‘circuit’ and replace with ‘route’.

Page 347 Table B1

1. In the title of the Table, delete the word ‘CIRCUIT’ and replace with ‘ROUTE’.

2. In the fourth column heading, delete the word ‘circuit’ and replace with ‘route’.

3. Delete the third note and replace with the following:

‘3. The maximum route lengths are the length of the phase conductor from the point of connection to the point of use and are related to a disconnection time of 0.4 s.’

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Page 352 Table C1

Delete the sub heading between Items G and H, and replace with the following:

1 2 3 4 5

Load group

Single domestic electrical

installation or individual living unit per phasea

Loading not associated with individual units—connection to each phase

(communal lighting, laundry loadings, lifts, motors, etc)

Page 358 Paragraph C2.3.2.3

Delete the (informal) table under the heading ‘Communal services’ and replace with the

following:

Equipment Load group Column Calculation Result

Lighting H 5 2500

230= 10.9A

Socket-outlets I 5 7 × 2 = 14.0A

Clothes dryers J(i) 5 144000.5

230

⎛ ⎞⎜ ⎟⎝ ⎠

= 31.3A

Lifts K 5 (22 × 1.25)

+ (22 × 0.75)

= 44.0A

Motors L 5 10.4 + (8.3 × 0.5) = 14.6A

Total communal services loading for heaviest loaded phase = 114.8A

Total loading for heaviest loaded phase:

= units loading + communal services loading

= 473.9 + 114.8 = 588.7 A


Alter the second row of the list to read:

‘30 50 W single-phase exhaust fans (permanently connected)’.


1. Alter the second last row of the list to read—

‘30000 VA two-phase spot welder (permanently connected)—varying operation (Paragraph C2.5.2.3(a)(i)) (50 A per phase primary current nameplate rating)

2. Alter the last row of the list to read—

‘15000 VA two-phase spot welder (permanently connected)—specific operation at 20% duty cycle (Paragraph C2.5.2.3(a)(ii)) (25 A per phase primary current nameplate rating)’.


In the (informal) table under the column labelled ‘Calculation’, row beginning ‘30000 VA...’, Groups:,

reference to ‘Paragraph C4.4.3(b)’ to be altered to read: ‘Paragraph C2.5.2.3(b)’.

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Page 369 Paragraph C3.1

In the last paragraph insert a space between ‘25’ and ‘mm2’.

Page 374 Paragraph C5.1

Amend the last paragraph to read ‘Paragraph C5.2, together with the associated Table, provides ....’

Page 379 Table C9


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TABLE C9

GUIDE TO THE MAXIMUM NUMBER OF SINGLE-CORE SHEATHED CABLES INSTALLED IN CONDUIT

Heavy duty rigid UPVC conduit Corflo conduit Medium duty corrugated

Medium duty rigid UPVC conduit

80 80 100 100 100 100 Cable size

20 25 32 40 50 63 (NZ) (AUS) (NZ) (AUS)

125 150 (NZ) (AUS)

125 150 20 25 32 40 16 20 25 32 40 50

PVC/PVC

V90

1 5 9 16 26 43 71 >100 >100 >100 >100 >100 >100 >100 >100 >100 >100 4 7 14 23 3 6 10 17 28 45

1.5 4 7 13 21 36 59 >100 >100 >100 >100 >100 >100 >100 >100 >100 >100 3 6 11 19 3 5 8 14 23 38

2.5 3 5 10 16 27 44 79 92 >100 >100 >100 >100 >100 >100 >100 >100 2 4 8 14 1 3 6 11 17 28

4 1 3 7 11 19 31 56 64 99 >100 >100 >100 99 >100 >100 >100 1 3 6 10 1 2 4 7 12 20

6 1 3 6 9 16 26 48 55 85 92 >100 >100 85 89 >100 >100 1 2 5 8 1 1 3 6 10 17

10 1 1 4 6 11 18 32 38 58 63 95 >100 58 60 90 >100 1 1 3 5 1 1 2 4 7 11

16 1 1 3 5 8 13 24 28 43 46 70 92 43 45 67 88 1 1 2 4 0 1 1 3 5 8

XLPE/PVC

25 0 1 1 3 5 9 16 19 29 31 48 62 29 30 45 60

35 0 1 1 2 4 7 13 15 24 26 39 52 24 25 38 50

50 0 1 1 1 3 6 10 12 19 21 31 41 19 20 30 40

70 0 0 1 1 2 4 8 9 15 16 24 31 15 15 23 30

95 0 0 1 1 1 3 6 7 11 12 18 24 11 12 17 23

120 0 0 0 1 1 2 5 6 9 10 15 20 9 10 14 19

150 0 0 0 1 1 2 4 5 7 8 12 16 7 8 12 16

185 0 0 0 0 1 1 3 4 6 6 10 13 6 6 10 13

240 0 0 0 0 1 1 2 3 5 5 8 10 5 5 7 10

300 0 0 0 0 1 1 1 2 4 4 6 8 4 4 6 8

400 0 0 0 0 0 1 1 1 3 3 5 7 3 3 5 6

500 0 0 0 0 0 1 1 1 3 3 4 6 3 3 4 6

630 0 0 0 0 0 0 1 1 1 2 3 4 1 1 3 4

Licensed to Mr Alex Frazer on 8 February 2010. Personal use licence only. Storage, distribution or use on network prohibited.

Page 380 Table C10


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TABLE C10

GUIDE TO THE MAXIMUM NUMBER OF TWO-CORE AND EARTH CABLES INSTALLED IN CONDUIT

Heavy duty rigid UPVC conduit Corflo conduit Medium duty corrugated Medium duty rigid UPVC conduit

80 80 100 100 100 100 Cable size

20 25 32 40 50 63 (NZ) (AUS) (NZ) (AUS)

125 150 (NZ) (AUS)

125 150 20 25 32 40 16 20 25 32 40 50

PVC/PVC

V90

1.5 1 1 2 4 7 11 21 24 38 41 62 81 38 40 59 78 1 1 1 3 0 1 1 2 4 7

2.5 0 1 1 3 5 9 16 19 30 32 48 63 30 31 46 61 0 1 1 3 0 1 1 1 3 6

4 0 1 1 2 4 7 13 15 23 25 38 50 23 24 36 48 0 1 1 2 0 0 1 1 2 4

6 0 1 1 2 4 6 12 13 21 23 34 45 21 22 33 43 0 0 1 1 0 0 1 1 2 4

PVC/PVC

V75

10 0 0 1 1 2 4 7 9 13 15 22 29 13 14 21 28 0 0 1 1 0 0 0 1 1 2

16 0 0 1 1 1 3 6 7 11 11 18 23 11 11 17 22 0 0 0 1 0 0 0 1 1 1

25 0 0 0 1 1 2 4 5 7 8 12 16 7 8 12 16 0 0 0 1 0 0 0 0 1 1

PVC/PVC

V90 FLAT

1 1 2 5 8 14 23 42 48 75 81 >100 >100 75 78 >100 >100 1 2 4 7 1 1 3 5 9 15

1.5 1 2 5 8 13 22 40 46 71 77 >100 >100 71 74 >100 >100 1 2 4 7 1 1 3 5 9 14

2.5 1 1 3 5 9 15 28 32 50 54 81 >100 50 52 77 >100 1 1 3 5 1 1 1 3 6 10

4 1 1 2 4 6 11 20 23 36 38 58 76 36 37 55 73 0 1 1 3 0 1 1 2 4 7

6 0 1 1 3 5 9 17 19 30 32 49 64 30 31 47 62 0 1 1 3 0 1 1 2 3 6

10 0 1 1 2 4 7 12 14 22 24 36 47 22 23 34 45 0 1 1 1 0 0 1 1 2 4

16 0 0 1 1 2 4 8 9 14 15 23 31 14 15 22 30 0 0 1 1 0 0 0 1 1 2


Page 381 Table C11


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TABLE C11

GUIDE TO THE MAXIMUM NUMBER OF FOUR-CORE AND EARTH CABLES INSTALLED IN CONDUIT

Heavy duty rigid UPVC conduit Corflo conduit Medium duty corrugated

Medium duty rigid UPVC conduit

80 80 100 100 100 100 Cable size

20 25 32 40 50 63 (NZ) (AUS) (NZ) (AUS)

125 150 (NZ) (AUS)

125 150 20 25 32 40 16 20 25 32 40 50

PVC/PVC V90

1.5 0 1 1 3 5 9 16 18 29 31 47 61 29 30 45 59 0 1 1 2 0 1 1 1 3 5

2.5 0 1 1 2 4 6 12 14 21 23 35 46 21 22 33 44 0 0 1 1 0 0 1 1 2 4

4 0 0 1 1 3 5 9 10 16 18 27 35 16 17 26 34 0 0 1 1 0 0 1 1 1 3

6 0 0 1 1 2 4 8 9 14 15 23 31 14 15 22 29 0 0 1 1 0 0 0 1 1 2

PVC/PVC V75

10 0 0 0 1 1 2 5 6 9 10 15 20 9 10 14 19

0 0 0 0 1 1

16 0 0 0 1 1 1 4 4 7 8 12 15 7 7 11 15

0 0 0 0 1 1

25 0 0 0 0 1 1 3 3 5 5 8 11 5 5 8 11

0 0 0 0 0 1

35 0 0 0 0 1 1 2 2 4 4 7 9 4 4 6 9

50 0 0 0 0 0 1 1 1 3 3 5 6 3 3 5 6

70 0 0 0 0 0 1 1 1 2 2 4 5 2 2 3 5

95 0 0 0 0 0 0 1 1 1 1 3 4 1 1 2 3

XLPE/PVC

16 0 0 0 1 1 3 5 6 9 10 15 20 9 10 15 19

25 0 0 0 0 1 1 3 3 6 6 9 12 6 6 9 12

35 0 0 0 0 1 1 2 3 4 5 7 10 4 5 7 9

50 0 0 0 0 0 1 1 2 3 3 6 7 3 3 5 7

70 0 0 0 0 0 1 1 1 2 2 4 5 2 2 4 5

95 0 0 0 0 0 0 1 1 1 1 3 4 1 1 3 4

120 0 0 0 0 0 0 1 1 1 1 2 3 1 1 2 3


Page 384 Paragraph D2.2

Delete the NOTE and replace with the following:

NOTE: Hollow steel poles must be capped at the top to prevent water penetration.

Page 385 Figure D1


Free length to lowestconductor suppor t( Tables D3, D5, D6

and D10 to D13 )= min imum he ight

above ground+ max imum sag

Depth in ground(Table D1)

Maximum span forcable t ype and s ize

( Table 3.9 )

Min imum pole /post length= min imum he ight

above ground+ Max imum sag

+ depth in ground+ 0.2 m

Maximum sag(Table D2)

Min imum height aboveground ( Table 3.8 )

Pole /post s izeand strength rat ing(Tables D3, D5, D6and D10 to D13 )

0.2 m

Pages 386 and 387 Paragraph D4.2.1

1. In the second paragraph change the measurement to ‘60 m’.

2. In the NOTE before (a), change the measurement to ‘+ 0.20 m’.

3. In Item (c), change the last two paragraphs to read—

‘From Steps (a), (b) and (c) plus an additional length above support of 0.20 m (see Paragraph D2.1),

Minimum length of pole/post = 4.6 + 0.6 + 1.5 + 0.20

= 6.90 m’.

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Pages 387 and 388 Paragraph D4.2.2

1. At the end of the first paragraph change ‘S11’ to ‘S18’.

2. Delete Items (a) to (f) and replace with the following:

(a) If a square sawn hardwood post is selected, then Table D3 shows that, for a free length to the lowest conductor of 5.2 m with a minimum strength of S18 and concreted in ground, a 175 mm × 175 mm sawn hardwood post is required (this has a strength rating of S21).

Then the post required is a 6.90 m × 175 mm × 175 mm sawn hardwood (S21) .

(b) If a cut round hardwood pole is selected, Tables D5 and D6 show that for a free length to the lowest conductor of 5.2 m with size reduced from the base of 8 m/2 kN pole, an S23 pole is required. For 8 m/2 kN pole with the size reduced from the top, an S24 pole is required. Note that a 2 kN pole is suitable, as Table D2 Column 6 shows that, for this example, the nominal aerial tension is 1.35 kN.

Thus the pole required is either an S23, 8 m pole reduced from the base to 6.90 m or an S24, 8 m pole reduced from the top to 6.90 m.

(c) If Grade 250 steel pipe is selected, Table D10 shows that for a free length to the lowest conductor of 5.2 m and a minimum strength of S18, a pipe of 140 mm diameter × 5.0 mm wall thickness is required. This has an S20 strength rating.

Thus the post required is a 6.90 m × 140 mm Ø × 5.0 mm wall thickness (S20) 250 Grade steel pipe.

(d) If Grade 350 steel pipe is selected, Table D11 shows that for a free length to the lowest conductor of 5.2 m and a minimum strength of S18, a pipe of 140 mm diameter and 3.5 mm wall thickness is required. This has an S19 strength rating.

Thus the post required is 6.90 m × 140 mm Ø × 3.5 mm wall thickness (S19) 350 Grade steel pipe.

(e) If Grade 350 square section is selected, Table D12(b) shows that for a free length to the lowest conductor of 5.2 m and a minimum strength of S18, a post of 100 mm × 100 mm × 9 mm wall thickness is required. This has an S20 strength rating.

Thus the post required is 6.90 m × 100 mm × 100 mm × 9.0 mm wall thickness (S20) 350 Grade steel section.

(f) If Grade 450 square section is selected, Table D13(b) shows that for a free length to the lowest conductor of 5.2 m and a minimum strength of S18 there is no suitable size available.

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Page 389 Table D2


TABLE D2

FORCE EXERTED BY AERIAL LINE CONDUCTORS

Total weight of all con-

ductors

Aerial line

span

Minimum aerial

line sag

Maximum allowable

aerial line sag

Normal aerial line

tension

Minimum aerial line

breaking tension

Minimum pole or

strut strength

Aerial line conductor

sizes

(kg/m) (m) (m) (m) (kN) (kN) Rating

Single phase insulated aerial lines—Singles or twin twisted

6 mm2 up to

16 mm2

Copper conductors (Cu)

0.35 max

10 15 20 30 40 50

0.09 0.17 0.26 0.43 0.57 0.73

0.2 0.4 0.6 1.0 1.3 2.0

0.49 0.58 0.67 0.92 1.23 1.50

12.4

S4 S7 S9

S13 S17 S20

16 mm2 up

to 25 mm2

Aluminium conductors (Al)

0.2 max

10 15 20 30 40 50

0.09 0.17 0.26 0.43 0.57 0.73

0.2 0.4 0.6 1.0 1.3 2.0

0.28 0.33 0.38 0.52 0.70 0.86

7

S1 S2 S3 S5

S10 S12

Three phase insulated aerial lines—Singles, twin twisted or bundled

6 mm2

up to 10 mm

2

Cu or 16 mm

2

up to 25 mm

2 Al

0.4 max

10 15 20 30 40 50

0.09 0.17 0.26 0.43 0.57 0.73

0.2 0.4 0.6 1.0 1.3 2.0

0.56 0.66 0.77 1.05 1.40 1.71

14

S6 S8

S11 S15 S19 S21

16 mm2 Cu 0.7 max

10 15 20 30 40 50

0.09 0.17 0.26 0.43 0.57 0.73

0.2 0.4 0.6 1.0 1.3 2.0

0.97 1.16 1.35 1.83 2.46 3.00

24.8

S14 S16 S18 S22 S25 S28

25 mm2 Cu

or 95 mm

2 Al

1.35 max

10 15 20 30 40 50

0.09 0.17 0.26 0.59 1.05 1.64

0.2 0.4 0.6 1.0 1.3 2.0

1.88 2.23 2.57 2.57 2.57 2.57

53.2

S23 S24 S26 S26 S26 S26

2 x 25 mm2

Cu or 2 × 4 Core 95 mm

2 Al

(parallel)

2.7 max

10 15 20 30 40 50

0.09 0.17 0.26 0.59 1.05 1.64

0.2 0.4 0.6 1.0 1.3 2.0

3.75 4.47 5.14 5.14 5.14 5.14

106.4

S29 S30 S31 S31 S31 S31

NOTE: Maximum allowable aerial line span (m) is limited to the maximum spans shown in Table 3.9 for the type of aerial conductor being used.

Page 400 Table D13(a)

Change the table number to ‘TABLE D13(b)’.

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Page 402 Paragraph E2.2

1. In Item (c), delete the hyphens between the words ‘fire’ and ‘and’ and between the words ‘smoke’ and ‘detection’.

2. Add the following new text after Item (h):

‘There are also other performance requirements, such as the amount of ceiling insulation, which while it is not directly electrical in nature, may be altered in response to the requirements of AS/NZS 3000. (See Paragraph E2.4 below).’


Delete the last paragraph, beginning ‘Of particular concern...’ and replace with the following:

‘E2.4 Particular issues

Of particular concern for electrical installations are—

(a) the making good of service penetrations in building insulation;

(b) the installing of insulation around light fittings that emit heat;

NOTE: The Guides to Volume 1 of the BCA and the Explanatory Information in Volume 2 of the BCA contain advisory information drawing attention to providing adequate clearance between ceiling insulation and light fittings. Clause 4.5.2.3 of this Standard contains requirements for such clearances.

(c) the loss of ceiling insulation resulting from an excessive number of downlights being installed in a house ceiling;

NOTE: From 1 May 2009, the BCA requires progressively more insulation to be installed in the ceiling of a house as more downlights are installed. This is to compensate for the loss of insulation around the downlights.

(d) the applying of building insulation over electrical cables; and

(e) the mounting height of ceiling fans.

Clause 3.4.2 of this Standard includes limits for the operating temperatures of cables. Ceiling fan mounting height information is contained in AS/NZS 60335.2.80.’


Delete the text of this clause and replace with the following:

‘Electrical work requires building consent if—

(a) it relates to a specified system of a building that is or will be covered by the building’s compliance schedule; or

(b) it is of a nature that would require a waiver or modification of the building code; or

(c) the building owner wishes to apply for a building consent for electrical work.

Certificates of Compliance, issued in accordance with the Electricity Regulations, have to be accepted by Building Consent Authorities as establishing compliance of the electrical work with the provisions of the Building Code.

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NOTES:

1. Specified systems are listed in Schedule 1 of the Building (Specified Systems,

Change the Use, and Earthquake-prone Buildings) Regulations 2005, and

include emergency lighting, fire alarms, lifts, ventilation and air conditioning

systems. Work on specified systems is restricted building work and may only

be carried out by licenced building practitioners.

2. A Certificate of Compliance for electrical work certifies compliance with the

Electricity Regulations, and does not remove the requirement for electrical

work to comply with non-electrical aspects of the Building Code.’

Page 418 Table H2

Change heading of the second column to read: ‘Protected against (see Paragraphs H4.2 and H5’.

Page 429 Appendix K

Delete the entire appendix.

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Documents

STANDARDS AUSTRALIA/STANDARDS NEW ZEALAND NZS 3000-2007 Amdt 1-2009 Electrical... · ISBN 0 7337 9203 0 AS/NZS 3000/Amdt 1/2009-07-30 STANDARDS AUSTRALIA/STANDARDS NEW ZEALAND Amendment