This is the second part of a two-part series on the methodologies used to find the short circuit current duties of circuit breakers and fuses. The first part, Short Circuit Current Duties of Circuit ...

Why are people scared of fuses? A properly installed fuse is just as safe as a circuit breaker, but there are many reasons why fuse panels can have problems. Why are people scared of fuses? Many ...

Article 430 in the National Electrical Code (NEC) recognizes two types of molded case circuit breakers (MCCBs) — instantaneous and inverse time — for motor branch circuit short circuit and ground ...

Testing your 240V circuit breaker panels is also important to ensure all of the wiring going into the individual breakers has not become loose or broken. “It’s also good to look at it and just make ...

Unless you’ve recently blown a fuse and suddenly found yourself without electricity, it’s probably been a while since you’ve spent some time at your circuit breaker box. But you might want to take a ...