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All of the technical questions we receive from our readers, instrument function is one of the most oft asked. We’re asked why something doesn’t work or why it has gone completely haywire. But ...

Churning with voltage and resembling an explosion at the wire factory, the breaker panel exudes mystique. But it's just a big switch, filled with other smaller ­switches, which lead to the switches ...

You may know in what situations the NEC requires you to install a ground-fault circuit interrupter (GFCI), but do you know how it works? A GFCI is specifically ...