Question 1

What is an Arc-Fault Circuit Interrupter (AFCI)?

Accepted Answer

An arc-fault is a hazardous electrical problem caused by damaged, overheated, or stressed electrical wiring or devices. When an arc-fault occurs, it creates a high-intensity heating arc that can easily ignite surrounding materials like wood, insulation, or dust, leading to a fire. These arcs can be

Question 2

Where are AFCIs Required in a Home?

Accepted Answer

The NEC specifies that virtually all 120-volt, single-phase, 15- and 20-ampere branch circuits supplying outlets or devices in new residential construction must have AFCI protection. This broad requirement covers a wide range of areas within a home. Specifically, you can expect AFCI protection to be

Question 3

AFCI vs. GFCI: What\'s the Difference?

Accepted Answer

It's common for homeowners to confuse AFCIs with Ground-Fault Circuit Interrupters (GFCIs), but they serve two distinct and equally important safety functions. A GFCI is designed to protect people from electric shock. It monitors the flow of electricity in a circuit and if it detects a ground fault—

AFCI Requirements for Homes in Pennsylvania