Q. My home was built in the 1950s, and I don’t have ground fault circuit interrupter outlets. Should I have them installed? A ground fault circuit interrupter, or GFCI, protects people and animals ...

Ground fault circuit interrupter receptacles, otherwise known as GFCI’s, help prevent electrocution by stopping the flow of electricity through an outlet when a problem is detected. GFCI’s do however ...

What is ground-fault protection? The answer depends on whether you are talking about ground-fault protection of equipment or ground-fault protection of people. Just because ground-fault protection is ...

NOTE: THIS SAFETY DEVICE IS STRONGLY RECOMMENDED FOR ALL USERS OF CAPACITOR LIMITED OFF-LINE POWER SUPPLIES! I always wondered what was inside one of these clever devices, so I found one in my junk ...

According to the National Fire Protection Association and the National Fire Incident Reporting System data, the five-year period from 1994 to 1998 averaged 73,500 annual electrical fires that were ...

A core-balance protection device serves as an example of how these switches operate. Phase and neutral power conductors pass through a toroidal (differential) current transformer. Under normal ...

Fig 1. Placing this two-terminal circuit between a GFCI line-load terminal and ground creates an adjustable line-voltage limiter. Fig 2. With the trip point set at 133 V rms, the circuit draws less ...

Wacker's new line of premium portable generators incorporates a full-system ground fault circuit interrupter (GFCI) that protects all receptacles, including 120V and 240V twist-lock types. Wacker's ...

What is this new circuit breaker, the Arc Fault Circuit Interrupter (AFCI), and how is it better than the circuit breakers (CBs) we have? Let me tell you a little story. Recently, I was working in a ...