The obligation
Before work in a building's roof space, the electrical installation must be de-energised by a competent person.
A PCBU or person with management and control of a workplace must ensure the building's electrical installation is de-energised by a competent person before work is done in its roof space. The competent person must be able to identify the main switch, know how to switch it off and know how to prevent unintentional re-activation, such as by locking or tagging out.
…
- What
- Before work in a building's roof space, the electrical installation must be de-energised by a competent person.
- Source
- worksafe.wa.gov.au
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Frequently asked questions
Which WHS law does this come from?
De-energising before work in roof spaces is a WHS requirement set out in Managing electrical risks in the workplace (WA). It is made under Work Health and Safety Act 2020 (WA). The relevant provision is WA > Codes of Practice > Electrical Safety.
What does this WHS obligation require?
De-energising before work in roof spaces is a WHS obligation under Managing electrical risks in the workplace (WA). In short, Before work in a building's roof space, the electrical installation must be de-energised by a competent person.
What changed recently?
De-energising before work in roof spaces was last updated on 9 October 2026.
