Electrical Commissioning Checklist
This comprehensive electrical commissioning checklist facilitates the systematic verification and commissioning of low voltage installations within buildings. It enables qualified inspectors to evaluate the compliance of switchboards, main switches, circuit breakers, distribution boards, and final circuits against client specifications and applicable regulatory standards. The checklist provides a structured methodology for assessing working space adequacy, facility provisions, conductor integrity, cable management systems, and overall wiring compliance.
Use this template with flowdit
- Customize this template or build your own
- Complete inspections using the mobile app
- Get reports and analyze your data
Start inspecting smarter — free for one user.
How to Use This Checklist
- Record the inspection date, the person preparing it, and the location of the installation.
- Work through each section in turn, from low voltage installation and working space through to final circuits, recording the result for every item.
- Where an item does not comply, note the specific defect and the corrective action needed.
- Keep the completed checklist with the other commissioning, maintenance and testing records in the site logbook.
Start inspecting smarter — free for one user.
What electrical commissioning of low voltage installations involves
Electrical commissioning is the systematic verification of a low voltage installation before it is placed into service. A qualified inspector works through the installation methodically, checking that switchboards, main switches, circuit breakers, distribution boards and final circuits meet the client's specification and the regulations that apply to the site. Rather than relying on a visual pass, the process tests that each protective device, connection and label is correct and functioning, so problems are identified and resolved while the system is still under control of the commissioning team. The checklist gives that work a repeatable structure, section by section.
Why it matters
An installation that is not properly commissioned can carry defects that are invisible in normal operation until they cause a failure and become a safety risk. - Live parts that are not adequately screened, or exposed conductive parts that are not effectively earthed, create a risk of electric shock. - Undersized conductors, incorrect fuse or MCB ratings, or protective devices set too high can leave circuits without effective fault protection. - Missing or unclear danger notices, warning labels, and schematic diagrams make the installation harder to operate and maintain safely. - Poorly supported cables, damaged insulation, or terminations that do not match the manufacturer's specification can lead to failure over time. - Without documented commissioning, maintenance and testing, there is no reliable record that the installation was ever verified as safe.
Working space and facilities
Before looking at the equipment itself, check the environment around it. Switch rooms and electrical facilities need adequate working space and safe access, with entrances and exits that are unobstructed and readily accessible. Locks should be functional and restrict unauthorised access. Lighting and ventilation must be installed and operational, fuse extraction tools must be available wherever they are needed, and a durable 'DANGER — UNAUTHORISED ENTRY PROHIBITED' notice should be displayed at every switch room entrance. Fire barriers and thermal protection must be correctly positioned and compliant, and all danger notices, warning labels, schematic diagrams and operating instructions should be present, legible and adequate.
Switchboard, main switch and circuit breaker
This section examines the main protective and control equipment. Confirm that switchgear, distribution boards and electrical equipment are clearly and durably labelled, and that a current notice of periodic inspection and testing is displayed at the main supply point. Check that circuits, fuses, switches and terminals are identified, that there is no visible damage or deterioration, and that commissioning, maintenance and testing activities are documented in the site logbook. Verify that accessible live parts are screened and that exposed conductive parts are effectively earthed. Protective devices should be individually tested and correctly configured, with interlocking where supplies may operate in parallel, and breaking capacity should be sufficient for the prospective fault current. Isolation must be available for every circuit, and control, indication and alarm functions should be tested.
Distribution boards
Each distribution board should carry a prominent 'DANGER' notice on its front panel, and where a residual current device is fitted, a notice specifying periodic testing requirements. Boards must be securely mounted on sound supports, with a suitable isolating switch, phase separation barriers where the design requires them, and MCBs whose breaking capacity meets the installation and fault level requirements. Fuse extraction tools should be available where withdrawal-type fuses are used, and circuit connections to MCBs or fuses should correspond with the approved schematic diagram.
Conductors, cables and wiring
This section looks at the physical condition and correctness of the wiring. Check that conductors and cables show no visible damage, that they are selected and installed relative to design currents and protective device operating currents, and that all conductors are securely connected and identified. Armoured cables should be terminated to metal casings or trunking with correctly rated glands, cables through smoke lobbies protected by enclosures with adequate fire resistance, non-sheathed cables protected by conduit, trunking or ducting, and all cables adequately supported and protected from mechanical damage. Terminations at distribution boards and busbars should use appropriate lugs, polarity should be consistent, and exposed metal parts including cable armouring should be effectively earthed.
Final circuits
Final circuits are the last link to the equipment in use. Confirm that fuses and single pole switches are connected to phase conductors only, with correct polarity throughout, and that wiring for emergency lighting and fire service installations is adequately segregated from all other wiring. Any damage, incorrect connection or missing protection found here should be recorded and corrected before the installation is handed over.
Final circuits and sign-off
Once every item has been assessed, the completed checklist forms part of the installation record. It should be kept with the site logbook alongside the schematic diagrams, periodic inspection notices and other technical documentation, so that anyone operating or maintaining the installation later can see what was verified, when, and by whom.
Frequently Asked Questions
Still managing operations with paper and Excel?
Digitize inspections, audits, SOPs, and corrective actions.
Book A Personal Demo
Resources Under The Same Category
GAP Audit Part 4 - Storage and Transportation Checklist
Utilize this comprehensive storage and transportation inspection tool to identif...
View template →
Site Investigation Report Template
A comprehensive site investigation report template designed for qualified enviro...
View template →
Ladder Inspection Checklist (HSE)
This checklist supports compliance with the Work at Height Regulations 2005 (WAH...
View template →
Environmental Site Audit Checklist
This comprehensive environmental site audit checklist empowers construction team...
View template →
LEED IEQ Inspection Checklist – Tower Construction
Structured Indoor Environmental Quality (IEQ) assessment framework designed to v...
View template →
OpenView Equipment Return Form
This equipment return form helps organizations recover and document company asse...
View template →Ready to simplify inspections and get your team moving faster?
Start free today and turn inspections into a clear, consistent digital workflow. Prefer a guided walkthrough? Book a demo and see how flowdit can fit your team.