When a circuit breaker trips in your Perth home, it’s not just inconvenient — it’s your electrical system signalling that something is wrong. Understanding why a breaker trips is key to diagnosing and resolving the issue safely, avoiding damage to appliances, wiring, or worse, the risk of fire.
In this article, we’ll walk you through:
- Common reasons a circuit breaker trips (and how to spot them)
- What you should (and should not) do when a breaker trips
- When it’s time to stop resetting and call a professional electrician
- Preventative measures you can take to reduce future circuit breaker trips
Why Does a Circuit Breaker Trip?
Circuit breakers are safety devices designed to interrupt electrical flow if something abnormal happens. These “trips” are protective responses to prevent overheating, damage, or fire.
Below are the most frequent causes of circuit breaker trips in Perth homes.
1. Overloaded Circuits
This is the most common cause of breaker trips. When too many appliances or devices draw power from a single circuit at once, the demand exceeds the breaker’s capacity — it trips to prevent wiring from overheating.
Signs: The breaker trips only during periods of heavy appliance use (e.g. running air conditioning, multiple high-wattage devices together).
2. Short Circuits
A short circuit occurs when an active conductor comes in contact with a neutral or another active conductor. This causes a sudden surge in current, triggering the breaker instantly.
You might notice scorch marks, a burning smell, or broken insulation near outlets or switches as clues.
How to Troubleshoot a Tripped Circuit Breaker
1. Locate Your Switchboard
In Perth dwellings, it’s often in a garage, laundry, hallway, or an external wall.
2. Identify the Tripped Breaker
The tripped switch will appear in a different off position, or show a red indicator (depending on your breaker make).
3. Reset the Breaker
First, push to the OFF position, then back to ON. That ensures the mechanism properly resets.
4. Turn Devices Back On One at a Time
Start with low-power loads (e.g. a light) and monitor. If the breaker trips again after turning on a particular appliance, that appliance or circuit may be the culprit.
5. Observe and Take Notes
Watch for re-tripping, buzzing noises, warm outlets, flickering lights, or burning smells. These are warning signs of deeper faults.
When Not to Reset
If the breaker trips immediately after resetting (with no load), or you notice burning smells, marks, or hear buzzing — do not keep resetting it.
Each attempt may increase the risk of sparking or damage. Instead, leave it tripped and call a licensed electrician.
Common Warning Signs You Should Call an Electrician
- Breaker will not remain in the ON position after reset
- Persistent tripping even with minimal load
- Burning or electrical smell around outlets, switchboard, or wiring
- Buzzing noises, flickering lights, or dimming
- Warm outlet covers or faceplates
- Signs of scorching, smoke marks, or melted insulation
- Loose switches, powerpoints, or damaged wiring
If you experience any of these together with repeated circuit breaker trips, it’s a strong indication of a hidden fault.
Only a qualified electrician can safely trace and repair such hazards.
FAQ's
That suggests that the additional load is pushing the circuit beyond its limit (overload) or that the appliance has a fault. Try operating it on a less-loaded circuit.
No repeated resetting can cause damage or spark an arc. If it keeps tripping, you need a proper diagnosis.
Only licensed (A-grade) electricians can legally and safely work on household wiring. DIY repairs involving internal wiring or switchboards are not allowed under WA electrical regulations.
Costs vary depending on complexity – from a faulty appliance replacement, to re-wiring circuits, to upgrading switchboards. Hilton Electrical provides transparent quotes after inspection.
