Electrical Commissioning & Testing SWMS

Electrical commissioning and testing is the final verification stage where newly installed switchboards, distribution systems, and protective devices are energised and proven safe for service. This work involves first energisation, insulation resistance testing, earth loop impedance verification, and RCD trip-time confirmation under AS/NZS 3000:2018 Section 8 requirements. Because commissioning frequently involves working on or near live conductors, exposure to potential arc flash incident energy, and the deliberate energisation of unproven circuits, it meets the definition of High Risk Construction Work under WHS Regulation 2011 r291. A documented Safe Work Method Statement is mandatory before work commences, must be developed in consultation with affected workers under s47-49, and must be available for inspection by the regulator and reviewed if control measures change. This SWMS template addresses the specific hazards of phase-to-phase contact, induced voltages, capacitive discharge, and equipment failure during initial energisation.

Hazards identified

7 hazards covered, sorted by priority.

Control measures

Hierarchy-of-controls order: elimination → substitution → isolation → engineering → administrative → PPE.

1. 1Elimination — De-energise and prove dead before all testing where technically feasible; perform insulation and continuity tests on isolated circuits prior to any energisation attempt.
2. 2Elimination — Eliminate live racking by using remote racking devices for circuit breakers rated above 400A in accordance with AS/NZS 4836:2023 clause 7.
3. 3Substitution — Substitute manual test probes with permanently installed test points, voltage indicators, and CBS ArcSafe remote operators to remove the operator from the arc flash boundary.
4. 4Substitution — Replace direct-contact loop impedance testing with non-contact clamp-on earth resistance meters where circuit topology permits compliant AS/NZS 3017:2022 results.
5. 5Engineering — Install temporary arc-rated barriers and verify switchboard IP rating and form segregation before energising; confirm protective device settings match the coordination study.
6. 6Engineering — Apply multi-point lockout-tagout with personal danger tags, captive-key isolation systems, and voltage-indicating padlocks on every isolation point feeding the test zone.
7. 7Administrative — Issue an Electrical Access Permit signed by a competent person before commissioning, with documented test sequence, exclusion zone radius per AS/NZS 4836 Table 7.1, and standby observer.
8. 8Administrative — Conduct a daily pre-start briefing using this SWMS, verify electrical licences and HV switching authorities, and brief emergency response including CPR-trained rescuer location.
9. 9PPE — Wear arc-rated clothing matched to the calculated incident energy (minimum CAT 2, 8 cal/cm²), arc-rated face shield, Class 0 insulating gloves with leather over-gloves, and dielectric footwear.
10. 10PPE — Use insulated and shrouded test leads compliant with AS/NZS 61010.031, CAT IV-rated multimeters fused at the probe tip, and hearing protection during fault-level energisation.

Applicable Codes of Practice

High-Risk Construction Work triggered

Worked example

On a six-storey commercial fit-out, the commissioning electrician is scheduled to energise the Level 3 distribution board for the first time and verify RCD operation on twelve final subcircuits. At the 6:45am pre-start, the supervisor pulls up this Electrical Commissioning & Testing SWMS on a site tablet and walks the two-person crew through it. They identify the Level 3 DB as fed from two sources — the main switchboard and a temporary builders' supply — flagging hazard four (induced voltage) and hazard seven (unauthorised re-energisation). The crew selects the engineering control of dual-point lockout with captive-key isolation and the administrative control of issuing an Electrical Access Permit, which the supervisor signs as the competent person. Arc-rated CAT 2 clothing is donned because the upstream protective device clearing time produces a calculated incident energy of 5.2 cal/cm². Each worker signs the SWMS sign-on register, confirming licence currency. Mid-task, the loop impedance reading on circuit C7 exceeds the AS/NZS 3000 maximum — the crew stops, annotates the SWMS field-change log noting the deviation, isolates again, and investigates a loose neutral bar connection before retesting. The completed SWMS, permit, and test results are uploaded to the project compliance folder before energisation is declared complete and the Certificate of Electrical Safety is issued.

Related legislation

• WHS Act 2011 (model)
• WHS Regulation 2025
• AS/NZS 3000 — Electrical installations; AS/NZS 3012 — Electrical installations construction sites

Frequently asked questions