Signs your switchboard needs upgrading

Your switchboard is the part of the house electrical system you think about least, right up until something goes wrong. It protects every circuit in the home, and in a lot of older Gold Coast and Brisbane houses it’s the original board from the day the house was built.

Not every old board needs replacing, and we’ll tell you straight if yours is fine. But there are clear signs that a switchboard has reached the end of its useful life. Here’s what we look for.

You still have ceramic fuses

If your board has white ceramic fuse holders that pull out, with fuse wire inside, it’s a clear sign the board is decades old. Rewireable fuses do protect against overloads, but they’re slow, easy to replace with the wrong size wire, and they offer no protection against electric shock.

We still see boards where someone has repaired a blown fuse with heavier wire, or worse, something that isn’t fuse wire at all. That removes the protection completely and turns a simple overload into a fire risk.

There are no safety switches, or only one

Safety switches (residual current devices, or RCDs) detect current leaking to earth, which is what happens when electricity passes through a person. They trip in a fraction of a second and are one of the most important safety devices in a home.

Many older homes have no safety switches at all, or a single one covering just the power points. Current Wiring Rules (AS/NZS 3000) require RCD protection on final subcircuits for new work in homes, and spreading circuits across more than one RCD means a single fault doesn’t black out the whole house. Our page on safety switch installation explains how we set these up.

Breakers trip often or fuses keep blowing

Occasional tripping is the board doing its job. Frequent tripping usually means something else is going on: a circuit carrying more load than it was designed for, a faulty appliance, moisture getting into a fitting, or deteriorating wiring.

Sometimes the fix is a simple repair elsewhere in the house and the board is fine. Other times the board simply doesn’t have enough circuits for how the house is used now. If you’re resetting the same breaker every week, it’s worth getting it looked at. Our guide on why a safety switch keeps tripping covers the common causes.

Burning smells, heat, buzzing or scorch marks

These are the urgent ones. A switchboard should not be hot to the touch, should not buzz or crackle, and should never smell like burning plastic. Scorch marks around a fuse, breaker or terminal point to a loose connection that has been arcing and overheating.

If you notice any of these, don’t open the board or poke around inside. If it’s safe to do so, turn off the main switch and call a licensed electrician. If there’s smoke or flame, get everyone out and call 000.

Your board may contain asbestos

Many switchboards installed before the late 1980s were mounted on panels containing asbestos. A lot of these are still in service across older suburbs. Asbestos panels are generally low risk while undisturbed, but they shouldn’t be drilled, cut or broken.

When we upgrade a board like this, the old panel is removed and disposed of in line with asbestos handling requirements. If you’re not sure what your board is made of, we can take a look and give you an honest opinion before any work is planned.

You’re adding big new loads

Plenty of switchboard upgrades aren’t triggered by a fault at all. They happen because the house is being asked to do more. Common triggers we see:

• Ducted or multiple split system air conditioners
• An induction cooktop replacing gas
• A home EV charger
• Solar panels or a home battery
• A pool, spa or granny flat
• A kitchen or bathroom renovation

Each of these needs its own circuit and protection. If there’s no room left on the board, or the board isn’t in a condition to take new work, an upgrade is often the most practical path. Solar and battery installers in particular will usually require the board to be in good order before they connect.

Lights flicker or dim when appliances start

A brief flicker when a big motor starts, like an air conditioner compressor, can be normal. Lights that dim noticeably, flicker regularly or behave differently in different rooms can point to loose connections at the board, overloaded circuits or a problem with the supply. It’s worth having it checked rather than living with it.

What a switchboard upgrade involves

For most homes, the upgrade goes like this:

1. Inspection and quote. We look at the existing board, the circuits it feeds, the main earth and the incoming supply, and talk through what you plan to add in the next few years. You get a written quote.
2. Network requirements. Some upgrades involve the meter or incoming supply, which may need approval or work from the local network, such as Energex in South East Queensland or Essential Energy in the Northern Rivers. We handle that paperwork where it applies.
3. The changeover. Power is off for part of a day while we replace the board, install circuit breakers and safety switches, label everything and test each circuit.
4. Testing and paperwork. Every circuit is tested before power is restored for good, and you receive a compliance certificate.

Testing sometimes turns up faults in the existing wiring that the old fuses were never going to catch. When that happens, we’ll explain what we’ve found and your options before doing anything extra.

Don’t wait for a failure

Switchboard problems rarely fix themselves. If you recognise more than one of these signs, it’s worth getting an assessment. Our electrical safety inspection is a good starting point if you want a full picture of the house, or you can go straight to a quote for a switchboard upgrade. We’re based in Mudgeeraba and cover the Gold Coast, Brisbane, Logan and Northern Rivers.