Sparking power point: what to do

You pull the plug out of the wall and see a flash. Or you hear a crackle behind the faceplate when the heater kicks in. It is natural to wonder whether that is a problem. Sometimes it is not. Often it is. Here is how to tell, and what to do.

A small spark can be normal

When you plug in or unplug an appliance that is switched on and drawing power, a very small, brief blue spark inside the socket can happen. Current is jumping the tiny gap as the pins make or break contact. Switching the power point off before you plug or unplug avoids it entirely, and is a good habit anyway.

When a spark is a warning sign

Call a licensed electrician if you notice any of these:

• A large spark, a loud pop or a flash you can see from across the room.
• Yellow or white sparks rather than a quick blue flicker.
• Sparking when nothing is being plugged in or unplugged.
• Black or brown scorch marks on the faceplate or around the pin holes.
• A faceplate that feels warm or hot to the touch.
• A burning or melting plastic smell.
• Crackling, buzzing or sizzling from inside the wall.
• Plugs that sit loosely and fall out easily.

What to do right now

If there is smoke or flame

Get everyone out and call 000. Do not try to fight an electrical fire with water.

If there is no fire

• Do not use the power point again.
• If it is safe, switch the outlet off and unplug anything connected, holding the plug body rather than the cord.
• Turn off the circuit at the switchboard if you know which breaker controls it.
• Put tape across it or a note on it so no one else in the house uses it.
• Call an electrician to inspect and replace it.

What causes a power point to spark badly

Loose wiring

The terminals behind a power point can loosen over time, especially on outlets that get heavy use or plugs pulled at an angle. A loose connection arcs and heats up, which is how scorch marks start.

Worn-out outlets

The spring contacts that grip a plug lose tension with age. In older homes around Dapto, Unanderra and Warilla, many power points are original fittings decades old.

Overloading

Running a heater, kettle and hair dryer off one double outlet with a power board can push more current than the outlet was built for.

Moisture

Outdoor and laundry power points that are not properly rated can let in water. Along the coast, salt air corrodes contacts in outdoor outlets quickly.

Damaged appliances

Sometimes the outlet is fine and the plug or cord is the problem. A damaged lead can spark wherever it is plugged in.

Why a safety switch matters

A safety switch monitors current leaking to earth and cuts power in a fraction of a second if it detects a fault that could shock someone. It does not stop every kind of overheating connection, but it is a vital layer of protection. If your switchboard still has old fuses and no safety switches, a sparking outlet is a good reminder to have that looked at too.

The fix

Kalani will isolate the circuit, remove the outlet and check the wiring behind it. If the cable is in good shape, he will replace the outlet with a new one, often a model with USB charging ports if you would like them. If the cable is heat-damaged or brittle, he will explain the options, which may include replacing a section of cabling. Our power point installation service covers replacements, extra outlets and outdoor weatherproof points.

Power point and wiring repairs must be done by a licensed electrician in NSW. Please do not replace a scorched outlet yourself.

Get it checked

If a power point in your home is sparking, hot or scorched, call or text Kalani on 0424 400 346. Flowstate is open 24 hours for emergency call outs. A photo of the outlet, including any marks, helps him understand what he is walking into.