What it costs
$1,200 to $3,500 for a typical domestic upgrade including RCDs, circuit breakers, labelling and a compliance certificate.
Three things push it higher, and all three are common in pre-war homes here: consumer mains needing replacement back to the point of attachment (add $500–$1,500), asbestos-cement backing behind the existing board (licensed removal), and a meter box too small for a modern board. Anyone quoting over the phone without seeing the board is guessing.
How fast
Half a day to a full day on site, with the power off for several hours. We give you a window so you can plan around the fridge and any work-from-home commitments. Usually bookable within a few days.
What actually changes
If your switchboard has porcelain fuse carriers with a strand of fuse wire across two screws, that is 1930s technology protecting a house full of 2026 appliances. It has one job — stopping the cable catching fire when it's overloaded — and it does that job slowly. What it does not do at all is protect a person.
- RCDs (safety switches) detect current leaking to earth, through wet insulation or through a person, and cut power in about 30 milliseconds. A rewireable fuse will let a fatal current flow indefinitely.
- Circuit breakers replace fuse wire. They trip accurately, reset with a switch, and nobody is tempted to bridge them with a bigger piece of wire at 11pm.
- Capacity and separation. Old boards run everything off two or three circuits. A new board splits kitchen, general power, lighting, air-conditioning and EV charging, so one fault doesn't black out the house and you have headroom to add.
Signs you shouldn't wait
- Ceramic fuses, or a board where nothing has a TEST button
- Fuses blowing repeatedly, or breakers tripping under normal use
- Heat, discolouration or buzzing at the board
- You're adding an EV charger, solar, ducted air-conditioning or a new kitchen
- You're selling, or converting the property to a rental
Common questions
How much does a switchboard upgrade cost in Adelaide?
$1,200 to $3,500 for a typical domestic upgrade including RCDs, breakers, labelling and a compliance certificate. Consumer mains replacement, asbestos backing removal or a bigger meter box add to that.
How long will my power be off?
Several hours on a typical upgrade. Most are a half to full day job.
Is a switchboard upgrade a legal requirement?
There's no blanket rule forcing an upgrade on an existing home. But any new or altered circuit must be RCD protected under AS/NZS 3000, so most significant work triggers at least a partial upgrade. Rental properties carry separate obligations — check the current position with Consumer and Business Services SA.
What is asbestos backing and why does it matter?
Switchboards installed before the 1980s were often mounted on asbestos-cement sheet. Harmless undisturbed, but replacing the board disturbs it, so it needs licensed removal and disposal. We check for it when we quote so it's a known cost, not a variation.
Can you upgrade a switchboard in a heritage-listed house?
Yes. The board is internal or in an existing meter box, so it isn't a development approval matter. Relocating a meter box on a street-facing wall of a listed property is a different conversation and we'd check the overlay first.
Related
Serving Unley, Parkside, Goodwood and Malvern. See what electrical work costs in Adelaide.