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