Philippine Electrical Code

(volume 2)CONTINUATION

ARTICLE 10.19-EXPLOSION-PROOF ELECTRICAL EQUIPMENT

10.19.1.1 GENERAL. 10.19.1.2 KIND OF EXPLOSION-PROOF CONSTRUCTION.

(A) FLAMEPROOF TYPE(B) INTRINSICALLY SAFE TYPE(C) INCREASED SAFETY TYPE(D) PRESSURIZED PROTECTED TYPE

10.19.1.3 MATERIALS.(A) MATERIALS FOR CONSTRUCTION. (C) COMPOUNDS. (B) PORTABLE APPLIANCES.

10.19.1.4 CONSTRUCTION.(A) METALLIC GUARDS. (D) ELECTRICAL EQUIPMENT. (B) GASKETS. (E) TYPE INDICATION.(C) CABLES.

 10.19.1.5 AMBIENT TEMPERATURE. REFERENCE AMBIENT TEMPERATURE FOR EXPLOSION-PROOF ELECTRICAL EQUIPMENT SHALL BE 50°C. 

ARTICLE 10.20-WATERCRAFT CARRYING LIQUIFIED GASSES IN BULK

10.20.1.1 General.(a) Application. (b) Requirements.

(1) Electrical Installation. (2) Electrical Equipment.(3) Approved Types.

10.20.1.2 Types of Equipment. (a) Types of Equipment Allowed.(b) Cargo Containment Systems.

ARTICLE 10.21-WATERCRAFT CARRYING VEHICLES WITH FUEL IN

THE TANKS10.21.1.1 Ventilation.

-At least six (6) air changes per hour

10.21.1.2 Equipment Location and Construction. -In general, the electrical equipment shall be installed within

a zone extending from the vehicle deck to 450 mm above the vehicle deck in enclosed or semi-enclosed space.

 ARTICLE 10.22-ELECTRICAL EQUIPMENT OF MOTOR VEHICLE CARRIERS AND COAL

CARRIERS10.22.1.1 General. 10.22.1.2 Motor Vehicle Carriers.

(a) Electrical Equipment in Car Deck and Cargo Holds.

(1) Within 450 mm. (4) Portable Electrical Appliances.

(2) Above 450 mm. (5) Fire and Gas Detection Systems. (3) In Exhaust Ventilation Ducts. (6) Isolating Switches.

(b) Electrical Equipment in the Compartments Adjacent to Cargo Holds.

10.22.1.3 Coal Carriers.(a) Electrical Equipment in Cargo Holds. (1) Switches and Outlets. (3) Cables. (2) Explosion-proof Type.

(b) Electrical Equipment in the Compartments Adjacent to Cargo Holds.(1) Cargo Holds with Non-gastight Doors. (2) Vicinity of Ventilation Openings.

(c) Cargo Lamps.

Article 10.23-ELECTRIC AND ELECTROHYDRAULIC STEERING GEARS

10.23.1.1 Scope. 10.23.1.2 Passenger Ships and Cargo Ships.

(a) Main and Auxiliary Gears. (d) Rudder Position Indicator. (b) Main Steering Gear. (e) Indicator Location. (c) Auxiliary Steering Gear. (f) Communication.

10.23.1.3 All Passengers Ships (Irrespective of Tonnage) and Cargo Ships of 5 000 Gross Tonnage and Upwards

(a) Two Circuits.(b) Short Circuit Protection.

10.23.1.4 Cargo Ships of Less than 5 000 Gross Tonnage.(a) Sole Source of Power. (b) Short Circuit Protection.

10.23.1.5 Tankers/Supertankers.(a) Tankers/Supertankers 10 000 Gross Tonnage

and Upward (New and Existing)(1) Control Circuits. (4)

Communication.(2) Load Control. (5) Rudder

Position Indicator. (3) Local Disconnect. (6) Local

Indicator. (b) For Every New Tankers/Supertankers of 10

000 Gross Tonnage and Upwards. In addition to the requirements of (a) above, the following shall apply:

(1) Identical Power Units.(2) Main Steering Gear

Capability. (3) Automatic Operation. (4) Alarm. (5) Alternative Power Supply.

ARTICLE 10.24-EMERGENCY ELECTRICAL SYSTEMS

10.24.1.1 General(a) Independent Supply. (b) Emergency Lights. (c) Storage Battery.

10.24.1.2 Location(a) Location Requirement. (b) On Watercraft for Passenger Service. (c) On Watercraft for Cargo Carrier.

10.24.1.3 Type and Capacity of Emergency Source of Electric Power.(a) Sources. (1) Emergency Generator. (2) Storage Battery. (b) Emergency Switchboard.

Table 10.24.1.4 Type and Capacity of Emergency Source of Electric Power

 Size of Vessel and Service

 Type or Types of Emergency Source of

Power 

 Period of Operation and Minimum

Capacity of Emergency Source of Power

Passenger vessel over 20 meters in length Ocean and coastwise 1600 g.t. & over, and, any passenger vessel, regardless of tonnage or service, where electric power operated watertight doors are required or installed

Storage battery with automatics transfer switch for short service supplemented by engine-generator with automatic starting and transfer switch for extended period (more than ½ hour)

  ½ hour to 36 hour

Ocean, coastwise, over 15 g.t. but less than 1600 g.t.

Storage battery with automatic transfer switch or engine generator with automatic starting and transfer switch

36 hours or twice the time of run whichever is the smaller

Other than ocean & coastwise, 100 g.t. over

Storage battery with automatic transfer switch or engine-generator with automatic starting and transfer switch

 12 hour

Other than ocean & coastwise, over 15 g.t. but less than 100 g.t.

Storage battery or engine-generator with automatic or manual operation

 

Cargo & misc. self propelled vessels & tanks, ships & barges with sleeping accommodations for more than 6 person. All waters 1600 g.t. & over

Storage battery or diesel generator automatic or manual operation

 12 hour

All water, 300 g.t. & over but less than 1600 g.t.

Storage battery or diesel generator automatic or manual operation. Or approved relay-controlled battery-operated system

  12 hours or twice the time of run

10.24.1.4 Period of Operation. 10.24.1.5 Emergency Lights.

(a) Part of Regular Lighting System. (c) Period of Navigation.

(b) Marking. (d) Area of Operation.

Condition 1: The source of supply for the general lighting is independent of the propulsion plant.

Condition 2: On watercraft required to have at least one standard compartment of subdivision, the source of power for general lighting is located above the continuous uppermost deck.

(e) Without Sleeping Accommodations. (f) Acceptable Emergency Lights.

ARTICLE 10.25-HIGH VOLTAGE ELECTRICAL INSTALLATION10.25.1 General

10.25.1.1 Scope. 10.25.1.2 Distribution System. (a) Three-phase, three-wire, insulated system; and(b) Three-phase, four-wire, neutral grounded system.10.25.1.3 Three-Wire Insulated System. 10.25.1.4 Four-Wire Neutral Grounded System.

10.25.2 Construction and Location 10.25.2.1 General(a)Protection. (c) Construction. (b) Marking. (d) Moisture and Condensation. 10.25.2.2 Rotating Machines.(a) Stator Windings. (b) Terminals. 10.25.2.3 Switchboards and Control Boards.(a) Enclosed Type. (d) Drawout Type. (b) Partitions. (e) Locking. (c) Separation. (f) Clearances and Creepages.

10.25.3 Protection 10.25.3.1. Generators. (a) Electrical Faults Protection. (b) Excitation System. 10.25.3.2 Transformers. (a) Short-circuit Protection. (c) Parallel Operation. (b) Overload Protection. (d) Current Limiting. 10.25.3.3 Step-up Transformers.10.25.3.4 Voltage Transformers.10.25.3.5 Protection for Secondary Circuit of Step-down Transformer.10.25.3.6 Ground Fault Monitoring.

10.25.4 High Voltage Cables10.25.4.1 Installation. (a) Metallic Protection. (b) Mechanical Damage. (c) Not Run Through Accommodation Spaces.

ARTICLE 10.26-SHIPBOARD AUTOMATIC AND REMOTE ELECTRICAL/ELECTRONIC CONTROL

SYSTEM10.26.1.1 General. (a) System Capability. (e) Self-Monitoring Type Alarm. (b) Fail-Safe Condition. (f) Instrumentations and Alarms. (c) Effective Function Operations. (g) Electrical Communication System. (d) Operation at Inclined Angle. (h) Monitoring and Controlling

Direction of Rotation and Speed. 10.26.1.2 Control Systems.

(a) General conditions (5 General conditions) (b) Characteristics. 1) Transfer Control. (5) Local Manual Control. (2) Secondary Control. (6) Effective Means for Monitoring. (3) Indicator. (7) Design. (4) Simultaneous Alarm. (c) Power Supply.

10.26.1.3 Environmental Condition.10.26.1.4 Manual Operation.10.26.1.5 Fail-Safe.10.26.1.6 Protection for Main Engine.10.26.1.7 Circuit Protection.

(a) Feeder Protection. (b) Subdivided and Arranged.

10.26.1.8 Continuity of Power Supply. (a) Standby Generator. (b) Emergency Source.

10.26.1.9 Electric Cables and Console Wiring. (a) Approved Type. (d) Need Not Be Sheathed and Armored. (b) Flame-retarding Type. (e) Shielded. (c) Solid Conductors.

10.26.1.9 Accessibility and Protection.(a) Accessibility. (c) Mounting.

(b) Effective Protection. 10.26.1.10 Electrical and Electronic Devices.

(a) General. (c) Logic Circuit Features.

(b) Semiconductor Devices. 10.26.1.11 Automation System.10.26.1.12 Maintenance and Inspection.

(a) Arrangement. (b) Control Equipment.

(c) Instruction Books.

ARTICLE 10.27-SHIPBOARD WIRING SYSTEM

10.27.1 Scope and Application 10.27.1.1 Scope.10.27.1.2 Application.

10.27.2 Cable Construction, Types of Cable Insulation and Classification of Insulation Materials

10.27.2.1 Cable Construction. (a) Material of Conductor. (b) Types of Cable Insulation. (c) Fiber Optic Cables.

Table 10.27.2.1 (b) Types of Cable InsulationsType

DesignationCable Insulation Maximum Conductor

Temperature, (°C)

T, T/N Polyvinyl Chloride-Heat and Moisture Resisting

75

B Butyl 80X Cross-Linked Polyethylene 85E Ethylene Propylene Rubber 85M Mineral (MI) 95     S Silicon Rubber 95

10.27.2.2 T/N Cable Construction. Cables constructed with Type T insulation may have insulation

thickness as indicated below when a moisture resistant nylon jacket is provided on each individual insulated conductor. The maximum voltage rating for these cables is 750 volts. The minimum average thickness of the Type T insulation and nylon shall be as specified in Table 10.27.2.2.

Table 10.27.2.2 Minimum Average Thickness of Type T Insulation and Nylon

Conductor Size(mm2)

Type T InsulationThickness, (mm)

Nylon Jacket Thickness,(mm)

Up to 3.5 0.38 0.1

5.5 0.51 0.1

8.0 – 14 0.76 0.13

22 – 30 1.02 0.15

38 – 100 1.27 0.18

125 – 250 1.65 0.2

325 – 500 1.78 0.23

10.27.2.3 Insulation Tests on Finished Cable.(a) General.

(1) Dielectric Strength of Cable;(a) Test Voltage.(b) Frequency. (c) Multi-conductor Cable Tests.

(2) Insulation Material. (a) Class A Insulation. (d) Class F Insulation.

(b) Class B Insulation. (e) Class H Insulation.(c) Class E Insulation.

(3) Insulation Resistance of Cables. 10.27.2.4 Cable Insulation Resistance for New Installation.

Up to 5 amperes load 2 000 000 ohms10 amperes load 1 000 000 ohms25 amperes load 400 000 ohms50 amperes load 250 000 ohms100 amperes load 100 000 ohms200 amperes load 50 000 ohms

Over 200 amperes load 25 000 ohms

10.27.2.5 Cable Application. (a) Propulsion Cables. (b) Distribution Cables. (c) Portable and Flexible Electric

Cables.(d) Battery Cables. (e) Controlgear Cables. (f) Generator Cables. (g) Switchboard Wires. (h) Cables for Power and Lighting.

(i) Cables for Alternating Current. (1) Single-Core Cables.

a. Non-magnetic Material. f. Glands for Passage of Cables.

b. Belonging to the Same Circuit. g. Skin Effect and Additional Losses.

c. Two, Three or Four Single-Core Cables. h. Impedance. d. Installed Against Steel Bulkhead. i. Cable of the

Same Phase. e. Pass Through Steel Plates.

(2) Multi-Conductor Cables. (3) Single Conductor Cables.

(j) Cables for Emergency Alarm and Fire Detection.

(k) Cables for Communication.

THE END