How do electrical switchboards work?
Power sent from your electrical service provider is first sent through your electrical switchboard where it is then distributed and redirected through the different circuits connected to the switchboard.
Fuses, limiters, and restrictors are inside of the switchboard making sure that the amount of electricity sent into your home from the switchboard is of a consistent current with minimal fluctuations.
Each circuit is rated to a certain max amp or voltage and allows only the amount indicated. It is also highly advised that each circuit should have its own safety switch to protect residents from electric shock.
Most homes have multiple circuits to separate the different electrical services within the home. For example, lighting fixtures and light switches will be on one circuit, whilst powerpoints will be on another.
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Homes will also usually have several hardwired appliances which require their own separate circuit. This is due to the appliance requiring a certain, often increased, level of electricity demand which can risk overloading other circuits. This applies to items such as:
- Air conditioning - split system and ducted
- Pool filtration systems
- Large fridges or freezers
- Large washing machines and dryers
- Electric hot water systems
- Heat pump hot water systems
- Spa or sauna
In Australia, all electrical work, including anything to do with a switchboard, including upgrades, repairs or maintenance, must be carried out by a licensed electrician.
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