What causes wire arcs?

Electrical arcing typically happens over time due to switches or electrical components wearing down. An arc can occur between the contacts within a switch or electrical component.

Due to the hidden nature of the electrical systems of our homes arcing often goes unnoticed, however, you may observe a crackling sound in a power point or switch when arcing is occurring.

Arcing can also happen if a circuit is overloaded due to too many items being plugged into the same circuit or power socket, or if any conductors within the circuit are damaged.

A common problem in older homes and buildings is rodents can get into the walls and ceiling void to eat the protective insulation surrounding the electrical wires which can also lead to arcing.

If you see wire arcing or hear crackling when you turn your switches on or off we strongly advise you to contact your local licenced electrician as soon as possible before the issue becomes a major problem.

Risks associated with electrical arcing

Arching can lead to the overheating of electrical components which can cause combustible materials like timber or insulation to catch fire. In NSW around 40% of residential fires are caused by electrical faults.

Other signs to keep an eye out for which can signify your electrical systems are faulty include flickering lights, repeated tripping of circuit breakers or safety switches, and a burning smell coming from power points or switches.

If you are experiencing any of these signs of a failing electrical system contact your licenced electrician without delay for a complete electrical fault-finding service and repairs.

Ref - fire.nsw.gov.au