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DDifficulty 3/5

When replacing a blown fuse, which requirement must the replacement meet?

Correct answer

Be of the type and amperage specified for that circuit.

It must be of the type and amperage specified by the manufacturer for that circuit. A fuse interrupts current when its limit is exceeded; it does not regulate circuit voltage. Do not fit a higher-amperage fuse or replace it with wire to prevent it blowing, as this removes the intended protection. Follow the manual’s procedure and have the fault checked if the fuse blows again.

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  • Be of the type and amperage specified for that circuit.

  • Have a higher amperage so that it does not blow easily.

  • Be replaced with wire that keeps the circuit permanently connected.

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