The 2002 NEC implemented new requirements to help reduce the number of electrical fires caused by parallel arc faults in branch circuit wiring. All branch circuits supplying bedrooms in single-family ...

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 ...

Created to protect personnel from electric shock, GFCI-type operations now help protect equipment as well. • Ground-fault sensing now protects equipment as well as personnel. • The magnitude of ...

Residential electrical branch circuit breakers incorporate electronic and electrical technology in Arc Fault Circuit Interrupters that can turn off power to prevent fires if arcing occurs. This ...

Solid-state power controllers (SSPCs) are designed to replace mechanical circuit breakers, which work by tripping when the temperature of their internal sensors reaches a predetermined level (Fig. 1).

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 ...