Safety Clearance Recom

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Safety Clearance Recommendations for

Electrical Panel

Safety Clearance Recommendations for Electrical Panel

Clearance Tables

1. Working Space around Indoor Panel/Circuit Board (NES 312.2)

2. Clearance around an Indoor electrical panel (NEC 110.26)

3. Clearance for Conductor Entering in Panel (NES 408.5)

4. Clearance between Bare Metal Busbar in Panel (NES 408.5)

5. Clearance of Outdoor electrical panel to Fence/Wall (NES 110.31)

6. Working Space around Indoor Panel/Circuit Board (NES 110.34)

7. Clearance around an Outdoor electrical panel (NES 110.31)

8. Elevation of Unguarded Live Parts above Working Space (NES 110.34E)

9. Working Space for Panel (Code Georgia Power Company)

Page 1 of 11Safety Clearance Recommendations for Electrical Panel | EEP

6/4/2015http://electrical-engineering-portal.com/safety-clearance-recommendations-for-electrical...

Working Space around Indoor Panel/Circuit Board (NES 312.2)

Voltage

Exposed live

parts to Not live

parts (or

grounded parts)

Exposed live

parts to

Grounded parts

(concrete/

brick/walls)

Exposed live

parts on both

sides

Up to 150 V0.914 Meter (3

Ft)

0.914 Meter (3

Ft)

0.914 Meter (3

Ft)

150 V to 600

V

0.914 Meter (3

Ft)1.07 Meter (36)

1.22 Meter (4

Ft)

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Clearance around an Indoor electrical panel (NES 110.26)



of 11Safety Clearance Recommendations for Electrical Panel | EEP


Description of Clearance Distance (min)

Left to Right the minimum

clearance0.9 Meter (3 Ft)

Distance between Panel and

wall1.0 Meter

Distance between Panel and

Ceiling0.9 Meter

Clear Height in front of Panel

>480V2.0 Meter

Clear Height in front of Panel

The door(s) shall open in the

direction of egress and be

equipped with panic bars,

pressure plates, or other devices

that are normally latched but

open under simple pressure

The work space shall permit at

least a 90 degree opening of

equipment doors or hinged

panels

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Clearance for Conductor Entering in Panel (NES 408.5)


Spacing between The conduit or

raceways (including their end

fittings) and bottom of enclosure

Not rise more than 75 mm

(3 in) above the bottom of

the enclosure

Spacing between bottom of

enclosure and insulated busbars,

their supports

200 mm

Spacing between bottom of

enclosure and non-insulated

busbars

200 mm

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Clearance between Bare Metal Busbar in Panel (NES 408.5)

Voltage

Opposite

Polarity

Mounted on

Same Surface

Opposite

Polarity Where

Held Free in

Air

Live Parts

to Ground

Up to 125 V 19.1 mm 12.7 mm 12.7 mm

125 V to 250

V31.8 mm 19.1 mm 12.7 mm

250 V to 600

V50.8 mm 25.4 mm 25.4 mm

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Clearance of Outdoor electrical panel to Fence/Wall (NES 110.31)

Voltage Distance (min)

600 V to 13.8 KV 3.05 Meter

13.8 KV to 230 KV 4.57 Meter

Above 230 KV 5.49 Meter

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Working Space around Indoor Panel/Circuit Board (NES 110.34)

Voltage

Exposed live

parts to Not live

parts (or

grounded parts)

Exposed live

parts to

Grounded parts

(concrete/brick/

walls)

Exposed live

parts on both

sides

601 V to 2.5 KV 0.914 Meter (3 Ft) 1.2 Meter (4 Ft) 1.5 Meter (5 Ft)

2.5 KV to 9.0

KV1.2 Meter (4 Ft) 1.5 Meter (5 Ft) 1.8 Meter (6 Ft)

9.0 KV to 25

KV1.5 Meter (5 Ft) 1.8 Meter (6 Ft) 2.5 Meter (8 Ft)

25 KV to 75 KV 1.8 Meter (6 Ft) 2.5 Meter (8 Ft)3.0 Meter (10

Ft)

Above 75 KV 2.5 Meter (8 Ft) 3.0 Meter (10 Ft)3.7 Meter (12

Ft)

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Clearance around an Outdoor electrical panel (NES 110.31)


Clear work space

Not less than 2.0 Meter high

(Measured vertically from the floor or

platform) or not less than 914 mm (3

ft) wide (Measured parallel to the

equipment)

Entrance For Panel(More than

1200 Amp and over 1.8 m

Wide)

One entrance required for working

space (Not less than 610 mm wide

and 2.0 m high)

Entrance For Panel: On Large

panels exceeding 1.8 Meter in

width

One Entrance at each end of the

equipment.

Non-metallic or Metal-enclosed

Panel in general public and the

bottom of the enclosure is less

than 2.5 m (8 ft) above the

floor or grade level

Enclosure door or hinged cover shall

be kept locked

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Elevation of Unguarded Live Parts above Working Space (NES

110.34E)

Voltage Elevation (min)

600 V to 7.5 KV 2.8 Meter

7.5 KV to 35 KV 2.9 Meter

Above 35 KV 2.9 Meter + 9.5 mm/KV

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Working Space for Panel (Code Georgia Power Company)

Voltage

Exposed live

parts to Not live

parts (or

grounded parts)

Exposed live parts to

Grounded parts

(concrete/brick/walls)

Exposed

live parts

on both

sides

Up to 150 V 3.0 Meter 3.0 Meter 3.0 Meter

150 V to 600

V3.0 Meter 3.5 Meter 4.0 Meter

600 V to 2.5

KV3.0 Meter 4.0 Meter 5.0 Meter

2.5 KV to 9


9 KV to 25


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*** NES National environmental standards for electricity transmission activities

Recommended EE articles //

Share with engineers //

About Author //

Jignesh Parmar

jiguparmar - Jignesh Parmar has completed his B.E(Electrical) from

Gujarat University. He is member of Institution of Engineers

(MIE),India. Membership No:M-1473586.He has more than 12 years

experience in Transmission -Distribution-Electrical Energy theft

detection-Electrical Maintenance-Electrical Projects (Planning-Designing-

Technical Review-coordination -Execution). He is Presently associate

with one of the leading business group as a Assistant Manager at

Ahmedabad,India. He has published numbers of Technical Articles in "Electrical Mirror",

"Electrical India", "Lighting India", "Industrial Electrix"(Australian Power Publications)

Magazines. He is Freelancer Programmer of Advance Excel and design useful Excel base

Electrical Programs as per IS, NEC, IEC,IEEE codes. He is Technical Blogger and Familiar with



English, Hindi, Gujarati, French languages. He wants to Share his experience & Knowledge and

help technical enthusiasts to find suitable solutions and updating themselves on various

Engineering Topics.

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Safety Clearance Recom