You may want to get your electrical system rewired if you notice any of the following signs: Flickering or dimming lights – A problem in the wiring causes this, so you should have a professional take a look. Unusually warm switches and outlets – If the switch or outlet feels unusually hot, this could be a sign of electrical overload and must be checked immediately. Unusual buzzing or crackling noises – These noises are often caused by poor wiring connections or an overload. Sparks when you plug in an appliance – Sparks indicate a faulty wiring system and should not be taken lightly. Frequently tripped circuit breakers – If the same breaker trips frequently, it could indicate a problem with the wiring. Loose connections in plugs and switches – Any loose connections should be checked immediately, as they could cause an electrical fire. Discoloured or burned outlets – If the outlet looks charred or discoloured, this could be a sign of serious damage that needs to be addressed by a qualified electrician in the Northern Beaches.