Don’t be tempted to do your own electrical work – it’s illegal and it can also be deadly.

If you are planning to have some electrical installation work done, you must engage a registered electrical contractor such as SEM. They will dispatch a licensed and qualified electrician to do the work to the required standards.

Safety switches, surge diverters and circuit breakers

Safety switches are often confused with circuit breakers and surge diverters. Safety switches are not the same as circuit breakers or fuses. Safety switches are designed to prevent injury or death by automatically switching off the electricity supply, within 0.03 of a second, when an electrical fault is detected.

Safety switches are an additional form of protection to be used with circuit breakers and fuses. They may not protect all wiring and electrical appliances and will not prevent all electric shocks. Fuses and circuit breakers protect against short circuits and current overloads.

It is important to understand the differences between these three devices.

What’s the difference?


















Surge diverters and circuit breakers do not act as safety switches for personal protection against electric shock.

Safety switches are not a substitute for common sense!

If you are unsure if a safety switch is installed at your property, contact a registered electrical contractor. Here's how to contact Michael at here


Switches, power points and power boards

  • Do not overload power points or power boards by “piggy backing” plugs into one socket or by using double adaptors – all power boards have maximum current ratings. Arrange for an additional power point to be installed by a licensed electrical professional
  • Do not allow children to play with power points or switches
  • Insert safety plugs in unused power point sockets – to prevent accidental contact
  • Ensure electrical cords are not hanging from benches where children can reach them
  • Do not plug high wattage appliances (such as heaters) into power boards – they may overheat the circuit wiring through overload and cause a fire
  • Place power boards in ventilated areas and keep them free of dust and dirt – if there is a build-up of dirt, moisture, grease or oil on or around power points and switches, have them tested by a licensed electrical professional
  • Do not spray household cleaners, detergents or insecticides on switches and power points
  • Do not wipe power points or switches with a wet cloth.








Extension leads

  • Use extension leads only as a temporary measure, and follow these safety tips:
  • Extension leads should have plugs with three metal cores (pins) – plugs with two cores are not earthed, dangerous and should only be used with double insulated electrical equipment
  • Place extension leads carefully around furniture preferably securely taped to the floor, or along wall edges
  • Do not place extension leads near heaters and cookers
  • Do not connect a ‘piggyback’ plug to the end of an extension lead to make it longer – the pins will be live, and therefore extremely dangerous
  • Do not attempt to repair electrical leads yourself, and never join them by twisting or taping
  • Extension leads that are damaged, frayed or have exposed inner wires should be thrown away or repaired only by licensed electricity professional
  • Do not make up a long extension lead from a series of shorter ones
  • If using extension leads outdoors check them regularly for signs of damage or age,
  • Never place extension leads under carpet or rugs as they may overheat
  • Fully extend leads on reels when in use.








If you are unsure about switches, power points or extension cords at your SEM here...don't risk you or your family's safety.

Approved electrical appliances

All prescribed electrical appliances and equipment must be approved prior to being made available for supply. Approved electrical appliances display a regulatory compliance mark (RCM) or a unique safety approval number.

Approval markings can vary between states. Typically they are an alphanumeric code, comprising the first letter of the state that issued the approval followed by between one and six digits.

Unsure? Cal SEM....they'll set you right!! Contact them right here.


Safety switches

Monitor the flow of electricity through a circuit and detect a problem that may pose a risk to personal safety and turn the power off within 0.03 of a second, and always have a test button and 30ma printed on them. They are also sometimes labeled with the words “safety switch”.

Surge diverter

Protect the property from voltage surges such as those resulting from a lightning strike. The surge diverter captures the voltage spikes in the wiring that would otherwise be transferred into the equipment within the property.

Circuit breaker

Provide short-circuit and overcurrent protection such as when a power point is overloaded.


Submitting Form...

The server encountered an error.

Form received.

Designed by Addwater Graphics