Renovating? Here's What AS3000 Means for Your Powerpoints, Lighting and Circuits

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What does AS3000 mean for your renovation? Every new or altered circuit in your renovation has to meet today's Wiring Rules, not the rules that applied when your house was built. In practice that means safety switch protection for new powerpoints and circuits, a switchboard that can actually take the extra load, and a few traps around lighting and like for like replacements that catch renovators out. Here is what changes the moment your project touches the wiring.

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1. New work follows today's rules, not 1975's

There is no grandfathering for new work. Your existing installation can lawfully stay as it was built, but the moment a circuit is added or altered, that work must meet the current Wiring Rules. This is why renovation quotes for older homes often include items the owner did not expect, like safety switches or board work: the electrician is not upselling, they are pricing what the standard requires the moment the wiring is touched. Our plain English guide to what AS3000 actually covers is a good primer before you brief your builder.

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2. Powerpoints: every new outlet needs RCD protection

In a home, AS/NZS 3000 requires 30 milliamp RCD protection, a safety switch, on final subcircuits, and the alterations rules extend that to renovations: powerpoints added to an existing circuit must be RCD protected just like outlets on a brand new circuit. Where the old circuit has no safety switch, the protection can be fitted at the start of the new wiring, though putting it at the switchboard is the cleaner long term result.

One useful nuance: swapping a damaged powerpoint for an equivalent one in the same location is a repair, not an alteration, and even replacing a single outlet with a double counts as a repair. Moving an outlet or adding one is where the alteration rules begin.

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3. Lighting: the one notable exception

Lighting circuits in new homes need RCD protection like everything else. But for renovations there is a specific carve out: an extension to an existing lighting only circuit that has no RCD protection does not, on its own, force RCD protection onto that circuit. Add a powerpoint to the same circuit, though, and the exception no longer applies. It is a fine distinction, and it is exactly the kind of call your electrician makes room by room during a renovation.

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4. The switchboard: where renovations usually land

Two rules push renovators toward board work. First, if all the circuit protection on a switchboard is replaced, every final subcircuit from that board must be brought under RCD protection. Second, the standard requires the protection to be spread sensibly: in homes, no more than three circuits on any one RCD and at least two RCDs on the board, so one fault does not black out the whole house.

Old fuse boards rarely have the space or the technology for any of that, which is why a switchboard upgrade is the most common companion job to a serious renovation. If you are also adding big loads, a kitchen upgrade, ducted air, a spa, an EV charger, check whether you need a power supply upgrade or even a three phase upgrade while the board is open. Our post on isolators, main switches and emergency shutoffs covers what else lives on a compliant board.

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5. Kitchens, bathrooms and laundries: water changes the rules

Wet areas get their own treatment in the Wiring Rules. Around baths, showers, sinks and laundry tubs, the standard defines zones that control what electrical equipment can be installed where, and how it must be protected. In renovation terms: the powerpoint and light switch positions on your designer's drawings need an electrician's eye before the walls close, because a fitting that sits a hand span inside a zone boundary may need to move or change type.

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6. When your renovation touches the network side

Some renovation triggers sit past your switchboard, on the service side. If the builder needs the power off to work safely, that is a Level 2 disconnect and reconnect. If your new appliances push up your maximum demand, the change may need to be notified to your distributor; our guide to when a load increase triggers a NOSW explains that paperwork. And metering changes go through your retailer, often as a smart meter upgrade. None of that is standard electrician work: it needs a Level 2 ASP.

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How High Demand Electrical helps

As a Level 2 ASP electrical contractor (Licence No. 397193C), we cover the whole renovation stack: the AS3000 side, including RCD upgrades, switchboard rebuilds and wet area compliance, and the network side, including disconnection and reconnection, supply upgrades and distributor paperwork. One contractor across both means your renovation does not stall between the sparky and the network.

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