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What fuse goes in a 13 amp plug?

Author

Mason Cooper

Published Mar 11, 2026

What fuse goes in a 13 amp plug?

A standard 13A plug (BS 1363) is designed to fit cables up to a maximum of 1.5mm2. The maximum current capacity of a 1.5mm2 cable is 15A and should be protected by a maximum fuse size of 13A. A 20A fuse in a domestic 13A plug should never be used.

Can you put a 13amp fuse in a plug?

No. You must use a 5A fuse. Using A 13A fuse is a fire risk. The fuse is there to protect the adapter in case of a fault.

How many amps can a 13A fuse take?

20A
BS 1362 Fuse Operation Characteristics In fact a 13A fuse will allow a current of 20A to pass indefinitely without blowing.

Can I put a 13 amp fuse in a 5 amp plug?

Based upon the limited information that you have provided, if your appliance actually uses 13A, then the 5A fuse you installed should blow immediately when the electrical current is applied.

Is a 3 amp fuse the same as a 13amp fuse?

The purpose of the fuse within a BS1363 plug is to protect the cable. The correct size of the fuse is ultimately dependant on the current rating of the cable. For an appliance rated as 700W or less, a 3A fuse should be fitted. For appliances above 700W, a 13A fuse should be fitted.

How do I know if my 13A fuse is blown UK?

Look at the fuse wire. If there is a visible gap in the wire or a dark or metallic smear inside the glass then the fuse is blown and needs to be replaced.

When would you use a 13amp fuse?

Plugs for appliances rated between about 700 watts and 3000 watts (the maximum rating of a wall socket) should be fitted with a 13-amp fuse (coloured brown). For example: 13A Fuse – Washing machine, dishwasher, microwave, kettle, toaster, iron.

What is the difference in the wire between a 3A fuse and a 13A fuse?

A 3A fuse is the safest to use and should be used for appliances at 700w or less. Appliances rated above 700w should use a 13A fuse. Be extra cautious when using a 13A fuse and try using a 3A fuse if and when it’s possible.

What does 13 amp fuse mean?

How do you tell if a 13 amp fuse is blown?

Remove the fuse from its holder. In some cases you may need a small screwdriver to unscrew the fuse holder cap. Look at the fuse wire. If there is a visible gap in the wire or a dark or metallic smear inside the glass then the fuse is blown and needs to be replaced.

What is 5A fuse used for?

5A Fuse. Used mainly for lighting circuits.

Can you put a 3 amp fuse in a 13 amp fused spur?

Yes you can. Fused spur is fused in the phase only and if switched switches phase only.