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Earthing 🇦🇺 WA / AustraliaWhat earthing system do we use in Australia (MEN)?
Australia uses the MEN system (Multiple Earthed Neutral), which is a TN-C-S type. The supply neutral is earthed at many points on the network, and at your main switchboard the neutral bar is joined to the main earth bar by the MEN link. Faults on metal parts then have a low-impedance path back through the neutral so the breaker trips fast.
One MEN link per installation, at the main switchboardNo other neutral–earth joins downstream
Regulation: AS/NZS 3000:2018 Section 5 (Earthing arrangements). Marking of the MEN connection: Cl 2.10.5.4.
Study aid in plain English, not the text of the standard. Always check the current AS/NZS 3000:2018 + WA rules and your local rules. Electrical work must be done by a licensed or registered electrician.
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