Switchboard Work — Safe Work Method Statement
Safe Work Method Statement for installation, maintenance, testing, and fault-finding on low voltage (LV) and high voltage (HV) switchboards in commercial, industrial, and residential settings by licensed electricians.
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Switchboard work is among the highest-risk electrical activities in the construction and maintenance industry. Switchboards concentrate electrical energy — a standard LV main switchboard in a commercial building may be rated at 630 A or more at 400 V three-phase, carrying available fault currents of 25 kA or higher. Contact with live busbars or terminals at these fault levels causes severe arc flash injuries and is invariably fatal. A SWMS is mandatory for switchboard work on construction sites under the model WHS Regulations, and must specifically address arc flash risk management.
All switchboard work must be performed by a licensed electrician holding a current electrical worker licence. In some jurisdictions, HV switchboard work requires additional endorsements — for example, in Queensland, workers on HV systems above 1,000 V AC require an HV authority. The switchboard must be manufactured and installed to comply with AS/NZS 61439 (Low-voltage switchgear and controlgear assemblies) and the installation must be inspected and tested before energisation per AS/NZS 3000.
The preferred approach to all switchboard work is to work de-energised. The safe isolation procedure under AS/NZS 4836 must be followed: isolate the relevant circuits or the entire incoming supply, test for dead, apply personal lock and tag, and confirm dead at the point of work before touching any part. Where work must be performed live — for example, testing under load or fault-finding — a specific energised electrical work (EEW) permit may be required, and PPE rated to the incident energy level of the arc flash hazard (calculated per AS/NZS 61439 or IEC 61482 methodology) must be worn.
Customise this template with the switchboard identifier, the incoming supply voltage and fault level, the isolation procedure, the arc flash hazard assessment results and PPE selection, and the relevant licence numbers of the electricians involved. This SWMS applies in all Australian jurisdictions with state electrical safety legislation applying concurrently.
Personal Protective Equipment
High Risk Construction Work Types
- •Work on or near energised electrical installations
Risk Assessment
1.Isolation and lockout/tagout (LOTO)
| Hazard / Risk | Initial Risk | Control Measures | Residual Risk | Responsibility |
|---|---|---|---|---|
| Contact with live electrical conductors due to inadequate isolation | Catastrophic | Implement a formal Lockout/Tagout (LOTO) procedure in accordance with the site electrical safety management plan and AS/NZS 3000. Identify all energy sources (including parallel feeds, UPS, and standby generators) for the circuit. Isolate at the source using a lockable isolation switch or fuse withdrawal. Apply a personal lockout device (hasp and padlock) and an 'OUT OF SERVICE — DO NOT OPERATE' danger tag with the worker's name, contact details, and date. Use a calibrated test instrument (CAT IV, voltage rated) to verify isolation — test known live, test isolated, test known live (Test-Prove-Test method). Work must never commence until isolation is verified. | Low | Licensed Electrician / Electrical Supervisor |
| Inadvertent re-energisation by a third party | Catastrophic | Use a multi-lock hasp so each worker working on the isolated circuit has their own padlock on the isolation point. Do not remove your lock until your own work is complete and you have personally confirmed the circuit is safe. Communicate isolation to building services, facilities management, and the site supervisor. Post a notice at the main switchboard and at the point of isolation describing the isolated circuit and work in progress. Where remote isolation (e.g. SCADA) is possible, notify the control room and obtain a written permit before commencing work. | Low | Licensed Electrician |
2.Live electrical work (where permitted by emergency procedures)
| Hazard / Risk | Initial Risk | Control Measures | Residual Risk | Responsibility |
|---|---|---|---|---|
| Arc flash and electrocution during live work | Catastrophic | Live electrical work is only permitted in strict accordance with state electrical safety legislation where isolation is not reasonably practicable (e.g. testing, fault-finding, or where supply cannot be interrupted). Live work requires a written permit signed by the electrical supervisor. Workers must wear full arc flash PPE rated to the calculated incident energy level (minimum 8 cal/cm² for LV switchboards with available fault current >10 kA). Use insulated tools rated to 1000V AC. Maintain maximum distance from live conductors at all times — use a voltage tester rather than probing with hands. A second qualified person must be present and acting as a safety observer during all live work. | Moderate | Licensed Electrician / Electrical Supervisor |
3.Switchboard installation and cable termination
| Hazard / Risk | Initial Risk | Control Measures | Residual Risk | Responsibility |
|---|---|---|---|---|
| Incorrect cable termination causing fire or equipment damage | High | Verify cable sizing, type, and rating against the circuit schedule and electrical drawings before termination. Use a calibrated torque screwdriver or wrench and tighten all connections to manufacturer-specified torque values (record values in the test report). Conduct continuity tests and insulation resistance tests (minimum 1 MΩ per circuit) on all new cables before energisation. Verify phase rotation with a phase rotation meter before connecting three-phase loads. Prepare and submit a Test and Verification Compliance Report (Form 5 or equivalent) for the installed switchboard as required by the relevant state electrical safety legislation. | Low | Licensed Electrician |
| Manual handling injury when manoeuvring heavy switchboard | Moderate | Obtain switchboard weight from the manufacturer before planning installation. Switchboards exceeding 25 kg require mechanical lifting assistance (pallet jack, crane, or forklift). For switchboards between 15–25 kg, use a two-person team lift with coordinated signals. Ensure switchboard room floor has sufficient capacity for the switchboard weight. Use trolleys or skates to transport switchboards into position. Clear the path of obstructions before moving. Workers must not attempt to lift switchboards in awkward positions in confined spaces — use mechanical aids. | Low | Licensed Electrician / Site Supervisor |
4.Testing and commissioning of switchboard
| Hazard / Risk | Initial Risk | Control Measures | Residual Risk | Responsibility |
|---|---|---|---|---|
| Electric shock or arc flash during energisation testing | High | Before applying power to a newly installed or modified switchboard, conduct a final inspection checklist confirming: all covers installed, no exposed live conductors, correct fuse/MCB ratings, all connections torqued, all bus bar shrouding installed. Stand to the side of the switchboard (not in front of the door) when closing the main switch for initial energisation. Wear full arc flash PPE. Have a second qualified person present. Test each circuit individually with a load on, then off, to confirm correct operation. Check surface temperatures with a thermal imaging camera after 30 minutes of operation under load. | Moderate | Licensed Electrician / Commissioning Engineer |
5.Switchboard fault-finding and maintenance
| Hazard / Risk | Initial Risk | Control Measures | Residual Risk | Responsibility |
|---|---|---|---|---|
| Contact with stored energy from capacitors in switchboard | High | After isolation, allow minimum 5 minutes before opening switchboards containing capacitor banks, UPS, or variable speed drives. Use discharge resistors or discharge procedure as specified by the equipment manufacturer before touching any internal components. Measure residual voltage with a CAT IV voltmeter before touching capacitor terminals. Display discharge time requirements on the switchboard door. Brief all workers on capacitor discharge hazard during pre-task briefing. Do not reach into the back of the switchboard until all stored energy is confirmed discharged. | Low | Licensed Electrician |
Relevant Codes of Practice
Worker Acknowledgement
By signing below, I confirm that I have read, understood and agree to comply with this Safe Work Method Statement.