Electrical Help & Diagnostics

A burning smell from a power point or switchboard indicates dangerous electrical arcing and severe terminal overheating. Loose screw connections, corroded contacts, or overloaded circuits generate temperatures exceeding 300°C, melting plastic faceplates and risking immediate structural timber fires.

A circuit breaker trips when electrical current draw exceeds its rated amperage (usually 16A or 20A for power circuits), or when a dead short circuit occurs between active and neutral wires. In Melbourne homes, tripping is most commonly caused by running multiple high-wattage appliances simultaneously on the same sub-circuit.

No. For over 90% of Melbourne homeowners, standard single-phase power is more than sufficient for an EV charger. A dedicated 7kW (32A) single-phase charger adds 40 to 50 km of driving range per hour, fully recharging a typical 60kWh electric vehicle (Tesla Model 3 / BYD Atto 3) overnight in 7 to 8 hours.

Lights flicker when electrical voltage fluctuates across the circuit. Common causes in Melbourne homes range from simple issues like incompatible LED dimmers or loose globes to serious hazards like a loose neutral wire in the switchboard or grid-wide voltage sags from Western Power/Powercor distribution lines.

A partial power outage occurs when a single sub-circuit breaker or safety switch has tripped, a single phase has dropped out in a three-phase property, or an open-circuit neutral has failed. The rest of your home remains powered because domestic switchboards divide electrical loads across separate sub-circuits.

Ceramic fuse switchboards are obsolete electrical panels that use replaceable copper fuse wire instead of modern circuit breakers. They lack life-saving safety switches (RCDs), present extreme fire risks from incorrect wire sizing, and do not comply with current Victorian electrical safety regulations or insurance requirements.

A power point stops working when its dedicated circuit breaker or safety switch (RCBO) has tripped, an upstream safety switch has isolated the circuit, or internal mechanical switch contacts have failed. If multiple power points along a wall are dead, a loose loop-through terminal in an adjacent socket is often responsible.

A safety switch (RCD) trips when it detects an electrical current leak to earth of 30 milliamps or more, cutting power within 300 milliseconds to prevent electrocution. In over 80% of Melbourne homes, tripping is caused by a faulty plugged-in appliance (such as an iron, kettle, or toaster) or rainwater entering an outdoor power point.

A hardwired 240V smoke alarm emits a single high-pitched chirp every 30 to 60 seconds when its internal 9V backup battery is depleted, dust or insects contaminate the optical sensor chamber, or the alarm unit has reached its statutory 10-year expiration date under Australian Standard AS 3786.

A switchboard buzzes or feels hot when electrical arcing occurs across loose terminal connections, an electromagnetic circuit breaker coil is vibrating under extreme overload, or high resistance has developed along the main busbar. This is an urgent fire hazard requiring immediate isolation by a licensed electrician.