Electrical Commissioning Checklist

Use this Electrical Commissioning Checklist to verify installations and ensure electrical components from switchboards to switches function correctly.

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Manufacturing
Electrical Commissioning Checklist

Working Space And Facilities

Switchboard, Main Switch And Circuit Breaker

Distribution Boards

Conductors, Cables, And Wiring

Final Circuits

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Checklist by GoAudits.com – Please note that this checklist is intended as an example. We do not guarantee compliance with the laws applicable to your territory or industry. You should seek professional advice to determine how this checklist should be adapted to your workplace or jurisdiction.

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Electrical Commissioning Checklist

Use this Electrical Commissioning Checklist to verify installations and ensure electrical components from switchboards to switches function correctly.

1. Is adequate working space and safe access provided for the switch room and/or electrical facilities?

2. Are the entrance/exit points to the switch room and/or electrical facilities free of obstruction?

3. Are suitable locking facilities provided for the switch room and/or electrical facilities?

4. Is suitable lighting provision provided for the switch room and/or electrical facilities?

5. Is suitable ventilation provision provided for the switch room and/or electrical facilities?

6. Are suitable tools for the withdrawal of fuses at the fuse board provided?

7. Is a warning notice ‘Danger—Unauthorized Entry Prohibited’ provided at every entrance of the switch room?

8. Are fire barriers and other measures for protection against thermal effects properly installed?

9. Are danger notices, warning notices, schematic diagrams, instructions, and similar information correctly and adequately provided?

10. Are warning notices for substations and switch rooms provided in compliance?

11. Are warning notices for earthing and main bonding connections provided in compliance?

12. Are all switchgear, distribution boards, and electrical equipment properly labeled?

1. Is an up-to-date notice of periodic inspection and testing provided at the point of supply (e.g., switchboard, circuit breaker, or distribution board) of the installation?

2. Are circuits, fuses, switches, terminals, etc., provided with a legible and durable identification label?

3. Is there no visible damage to impair safety?

4. Is the work done properly recorded in a logbook?

5. Is an up-to-date schematic diagram displayed?

6. Are all accessible live parts screened with insulating plates or earthed metal?

7. Are all exposed conductive parts effectively earthed?

8. Is the earthing system effectively connected?

9. Is a warning notice displayed at the main bonding connections?

10. Are all protective devices functioning properly and correctly set?

11. Is a suitable interlock scheme provided to prevent the parallel operation of two or more sources of supply, and are 4-pole incoming and interconnecting circuit breakers provided for supply from more than one source and interconnected?

12. Are electrically and mechanically interlocked 4-pole changeover devices installed where standby generator sets are installed?

13. Is the breaking capacity of all circuit breakers/interconnection devices able to withstand the prospective fault current?

14. Are protective relays correctly set and overcurrent protective devices suitably set for all circuits?

15. Are protective-type current transformers used for protective relays?

16. Is a means of isolation provided for every circuit?

17. Is the operation of circuit breakers and main switches checked?

18. Are control, indication, and alarm functions checked?

19. Is no undersized conductor used between the main busbar and fuses/MCBs?

20. Are fuses/MCBs matching the lowest-rated conductor in the circuit?

21. Are suitable cable terminations provided?

22. Are cable conductors of correct phases connected?

23. Are single-pole devices for protection or switching connected in phase conductors only?

1. Is a warning notice ‘Danger’ provided on the front panel of every distribution board?

2. Is a notice of periodic testing provided at or near the main distribution board incorporating a residual current device?

3. Are distribution boards securely mounted on suitable supports?

4. Is a suitable switch provided to control each distribution board?

5. Are phase barriers for 3-phase distribution boards provided, where necessary?

6. Is the breaking capacity of MCB compliant?

7. Are suitable tools for the withdrawal of fuses at a fuse board provided, where necessary?

8. Are circuits connected to MCBs or fuses in accordance with the schematic diagram?

1. s there no visible damage to impair safety?

2. Are all live conductors and their methods of insulation, in relation to design currents of circuits and operating currents of protective devices, properly selected and erected?

3. Are all cables, flexible cords, switches, plugs, socket outlets, accessories, and equipment in good working condition?

4. Are all conductors correctly and securely connected and identified?

5. Are armored cables properly terminated to the metal casing or trunking by proper cable glands?

6. Are cables passing through smoke lobbies protected by enclosures of adequate fire rating?

7. Are non-sheathed cables protected by conduit, trunking, or ducting?

8. Are cables and ductings adequately supported?

9. Are cables at distribution boards or busbars terminated with cable lugs?

10. Are the main cables connected with the correct polarity?

11. Are cables protected against mechanical damage and suitably supported?

12. Are all exposed metal parts, including the armor, effectively earthed?

1. Are all fuses and single-pole switches connected to the phase conductors only with the correct polarity?

2. Is wiring for emergency lighting and fire services installations segregated from other wirings?

3. Are low voltage circuits segregated from extra low voltage circuits?

4. Are cables of all phases and neutral of the circuit bunched and contained in the same conduit?

5. Are exposed insulated non-sheathed cables protected?

6. Is wiring inside false ceilings protected by conduit/trunking or metallic sheath?

7. Are socket outlets installed below 1.5 meters from the floor shuttered type complying with the prescribed requirements?

8. Are no socket outlets installed close to water taps, gas taps, or cookers to avoid danger?

9. Are floor socket outlets protected with suitable covers?

10. Are no 2-pin sockets installed, and are all socket outlets connected with protective conductors and live conductors terminated at the correct terminals?

11. Are radial final circuits using 5A/15A socket outlets compliant?

12. Is the circuit protective conductor formed by the enclosure and a separate protective conductor between the earthing terminal of the socket outlet and its associated metal box provided?

13. Is the circuit protective conductor not formed by the enclosure, and is a separate protective conductor to the earthing terminal of the socket outlet provided?

14. Is a residual current device with a rated residual operating current not exceeding 30mA provided for all socket outlets?

15. Are minimum sizes of protective conductors provided as per requirements for limiting protective conductor impedance?

16. Is a means of isolation provided for every fixed appliance?

17. Are all chokes, starters, and capacitors of discharge lamps enclosed in earthed metal boxes and suitably ventilated?

18. Are phase conductors connected to the center contact of Edison-type screw lamp holders?

19. Are no switches other than a switch fed from a safety source or operated by an insulation cord or rod, or a push-button type of switch with an insulated button of a large surface area provided in bathrooms?

20. Is the shaver supply unit compliant?

21. Are no fixed luminaires or fixed heaters with unguarded heating elements installed within reach of a person using the bath or shower?

22. Are appliances exposed to weather of a splash-proof type?

23. Are luminaires, switches, sockets, plugs, and cable couplers installed outdoors of a splash-proof type?