Title Page
-
Project Title
-
Location
-
Contractor
-
Checked by
-
Conducted on
Electrical Commissioning Checklist
Low Voltage (L.V.) Installation
Working Space and Facilities
-
Adequacy working space and safe access provided for switch room and /or electrical facilities.
-
Entrance /exit to switch room and/or electrical facilities are free of obstruction.
-
Suitable locking facilities provided for switch room and /or electrical facilities.
-
Suitable lighting provision provided for switch room and /or electrical facilities.
-
Suitable ventilation provision provided for switch room and /or electrical facilities.
-
Suitable tools for withdrawal of fuses at fuse board provided.
-
A warning notice ‘DANGER—UNAUTHORISED ENTRY PROHIBITED’ provided at every entrance of switch room.
-
Fire barriers and other measures for protection against thermal effects are properly installed.
-
Danger notices, warning notices, schematic diagrams, instructions and similar information are correctly and adequately provided.
-
Warning notices for substations and switch rooms provided in compliance.
-
Warning notices for earthing and main bonding connections provided in compliance.
-
All switchgears, distribution boards and electrical equipment properly labelled.
Switchboard, Main Switch and Circuit Breaker
-
An up-to-date notice of periodic inspection and testing provided at point of supply (i.e. a switchboard, a circuit breaker or a distribution board) of the installation.
-
Circuits, fuses, switches, terminals, etc. are provided with a legible and durable identification label.
-
No visible damage to impair safety.
-
Work done properly recorded in logbook.
-
An up-to-date schematic diagram displayed.
-
All accessible live parts screened with insulating plate or earthed metal.
-
All exposed conductive parts effectively earthed.
-
Earthing system effectively connected.
-
Warning notice displayed at main bonding connections.
-
All protective devices are functioned properly and correctly set.
-
Suitable interlock scheme provided to prevent parallel operation of two or more sources of supply and 4-pole incoming and interconnecting circuit breakers provided for supply to be taken from more than one source and is interconnected.
-
Electrically and mechanically interlocked 4-pole changeover device(s) where standby generator set(s) is installed.
-
The breaking capacity of all circuit breakers /interconnection devices are able to withstand the prospective fault current.
-
Protective relays have been correctly set and overcurrent protective devices suitably set for all circuits.
-
Protective type current transformers are used for protective relays.
-
A means of isolation provided for every circuit.
-
Operation of circuit breakers and main switches checked.
-
Control, indication and alarm functions checked.
-
No undersized conductor used between the main busbar and fuse/MCB’s.
-
Fuses/MCB’s matching the lowest rated conductor in the circuit.
-
Suitable cable terminations provided.
-
Cable conductors of correct phases connected.
-
Single-pole devices for protection or switching connected in phase conductors only.
Distribution Board
-
A warning notice ‘DANGER’ provided on the front panel of every distribution board.
-
A notice of periodic testing provided at or near the main distribution board incorporating a residual current device.
-
Distribution boards securely mounted on suitable supports.
-
A suitable switch provided to control each distribution board.
-
Phase barriers for 3-phase distribution board provided, where necessary.
-
The breaking capacity of MCB is compliant.
-
Suitable tools for withdrawal of fuses at a fuse board provided, where necessary.
-
Circuits connected to MCB or fuse in accordance with the schematic diagram.
Conductors, Cables and Wiring
-
No visible damage to impair safety.
-
All live conductors and their methods of insulation, in relation to design currents of circuits and to the operating currents of the protective devices, are properly selected and erected.
-
All cables, flexible cords, switches, plugs and socket outlets, accessories and equipment are found to be in good working conditions.
-
All conductors are correctly and securely connected and identified.
-
Armored cables properly terminated to metal casing or trunking by proper cable glands.
-
Cables passing through smoke lobby protected by enclosures of adequate fire rating.
-
Non-sheathed cables protected by conduit, trunking or ducting.
-
Cables and ductings adequately supported.
-
Cables at distribution board or busbar terminated with cable lugs
-
Main cables connected up with correct polarity.
-
Cables protected against mechanical damage and suitably supported.
-
All exposed metal parts including the armor effectively earthed.
Final Circuits
-
All fuses and single pole switches connected to the phase conductors only with correct polarity.
-
Wiring for emergency lightings and fire services installation segregated from other wirings.
-
Low voltage circuits segregated from extra low voltage circuits.
-
Cables of all phases and neutral of the circuit bunched and contained in the same conduit.
-
Exposed insulated non-sheathed cables protected.
-
Wiring inside false ceiling protected by conduit/trunking or metallic sheath.
-
Socket outlets installed below 1.5m from floor being shuttered type complying with the prescribed requirements.
-
No socket outlet installed close to water tap, gas tap or cooker so as to avoid danger.
-
Floor socket outlets protected with suitable cover.
-
No 2-pin sockets installed. All socket outlets connected with protective conductors and live conductors terminated at correct terminals.
-
Radial final circuits using 5A/15A socket outlets in compliance.
-
Circuit protective conductor is formed by the enclosure and a separate protective conductor between the earthing terminal of socket outlet and its associated metal box provided.
-
Circuit protective conductor is not formed by the enclosure and a separate protective conductor to the earthing terminal of socket outlet provided.
-
Residual current device having a rated residual operating current not exceeding 30mA provided for all socket outlets.
-
Minimum sizes of protective conductors are provided as per requirement for limitation of protective conductor impedance.
-
Means of isolation provided for every fixed appliance.
-
All chokes, starters and capacitors of discharge lamps enclosed in earthed metal box(es) and suitably ventilated.
-
Phase conductors connected to the center contact of the Edison-type screw lamp holders.
-
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 having an insulated button of a large surface area provided in bathrooms.
-
Shaver supply unit is compliant
-
No fixed luminaire nor fixed heater having unguarded heating elements installed within reach of a person using the bath or shower.
-
Appliances exposed to weather being splash-proof type.
-
Luminaires, switches, sockets and plugs, cable couplers installed outdoor, being splash proof type.
-
General/site lighting readily accessible to the public supplied from a safety source.
-
General/site lighting not readily accessible to the public and not supplied from a safety source, protected by RCD having a rated residual operating current not exceeding 30mA.
Completion
-
Additional Comments
-
Checked by
-
Witnessed by
-
Contractor Name & Signature