London Fire Brigade

Socket overload calculator

Are you overloading your electrical sockets?

Some appliances, such as lamps, televisions, computers, fridges and freezers generally require a 3 amp fuse.

However washing machines, dishwashers, microwaves, kettles, toasters and irons usually require 13 amp fuses.

Plug in some appliances below and find out if you are overloading your sockets at home and putting yourself at risk of causing a fire.

The Socket Calculator has been brought to you by Electrical Safety First.

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