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.

However, smart circuit breakers can now operate with real-time data, automatically isolating faults and rerouting power where possible, often before the fault becomes catastrophic.

We asked an expert to explain all the problems that can cause tripped circuits, how to check your circuit breaker, and when to call a professional.

The 2008 National Electrical Code (NEC) will require arc-fault circuit interrupters (AFCIs) throughout new homes in the U.S. So, your new construction should now incorporate ground-fault circuit ...