The answer is actually quite simple, but let me first explain why that locking device is there. Section 422.30 of the National Electric Code (NEC) requires a disconnecting means for all appliances.

The image of a breaker box in your mind probably looks like a small metal box tucked away in a corner of your home. It's the metal contraption with switches that control the flow of electricity ...

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 ...

We may receive a commission on purchases made from links. Anyone who's lived in a home or apartment has probably heard the ...

Before you buy the breaker, make sure you check the manufacturer’s name, box model number, and style number of the breaker that is approved for your box. You cannot ...

An older couple taking a look at their circuit breaker box - Coldsnowstorm/Getty Images Circuit breakers can be frustrating. You're happily bopping through your day, perhaps craving an English Muffin, ...