Your safety switch keeps tripping
A safety switch (also called an RCD) is designed to cut power the instant it detects current leaking to earth, so occasional trips are normal and mean the switch is doing its job. The concern is frequency.
- Tripping more than once or twice a month, without an obvious cause such as a faulty appliance, points to a deeper problem in the circuit.
- Repeated trips can mean damaged insulation, a loose connection, or water ingress somewhere in the wiring.
- Resetting the switch and moving on is not a fix; the underlying fault is still there.
Flickering, buzzing or dimming lights
Lights that dim briefly when a large appliance switches on, such as an air conditioner or oven, are usually just drawing a normal load spike. Lights that flicker, dim or buzz without a clear trigger are a different matter.
- Constant or worsening flickering often indicates a loose connection at the switch, fitting or switchboard.
- A buzzing sound from a switch or outlet suggests arcing, where electricity is jumping a small gap it shouldn't be crossing.
- Worth having checked promptly, as arcing generates heat in an enclosed space.
Power points that feel hot
Appliances get warm during use. Outlets and switches should not.
- Power points, switch plates or plugs that feel warm or hot to the touch signal excess resistance in the wiring behind them.
- A faceplate that vibrates slightly when in use is another sign of a loose or damaged connection.
- Stop using that outlet until it has been checked.
Burning or acrid smells
A burning, smoky or plastic-like smell near an outlet, switch or the switchboard is worth acting on.
- These smells usually mean insulation is starting to melt or wires are overheating inside a wall cavity.
- Switch off power to the affected area at the switchboard if it's safe to do so, and arrange for an electrician to take a look.
Scorch marks or discolouration
Brown or black marks around a power point or switch plate, or plastic that looks slightly melted or warped, are visible evidence of overheating.
- This is not a cosmetic issue; the fitting has already been exposed to enough heat to change its appearance.
- Replacing the faceplate on its own won't resolve anything, since the fault sits behind it, not on the surface.
An old fuse box or ageing switchboard
Many homes built before 2000 may still be running on original wiring and switchboards that predate current safety requirements.
- Western Australian homes are required to have at least two RCDs protecting the power and lighting circuits; a property with only one, or none, does not meet current requirements.
- Rewireable fuses and ageing circuit breakers are more likely to fail to trip when they should.
- An inspection can confirm whether the switchboard still meets current safety requirements, and whether an upgrade is worthwhile.
A power bill that has jumped without explanation
Faulty wiring can waste electricity through resistance and heat loss.
- A sudden rise in usage, without a corresponding change in habits or new appliances, is worth investigating.
- It's not proof of a wiring fault on its own, but it's a reasonable prompt to have the system checked alongside any other signs on this list.
Why this is a job for a licensed electrician
Electrical work in Western Australia is legally restricted to licensed electrical workers and contractors, who have the training and equipment to properly test a system and identify where a fault sits. A faulty installation can appear to function normally for a long time before an underlying issue shows itself, which is why a proper inspection matters more than guesswork.
If any of these signs sound familiar, the next step should be an inspection with a licensed electrician.
Source: Government of Western Australia - Electrical safety at home
Department of Energy, Mines, Industry Regulation and Safety (Building and Energy)
