Know that next time your car radio, windshield wipers or other device stops working, chances are a blown fuse is the culprit.

Maybe you are out of fuses, the breaker is broken or you just don’t want to go check the fuse box when ... Warning: These are Mains voltages and currents we are working with.

A plug connects a device to the mains electricity supply ... from the case of the device to the ground if there is a fault A fuse provides a built-in fail-safe to the electrical circuit for ...