In a multi-family dwelling, the NEC requires the installation of arc-fault circuit interrupters (AFCIs) in all branch circuits to protect against electrical fires. What is the primary purpose of an AFCI?
- ATo provide overcurrent protection
- To detect and interrupt arcing faults
- CTo prevent electrical fires
- DTo provide grounding protection
Exam tip
Recognize the importance of AFCIs in preventing electrical fires and understand their operation and requirements as per the NEC.
Why B is correct
The primary purpose of an AFCI is to detect and interrupt arcing faults, which are a leading cause of electrical fires. Overcurrent protection, preventing electrical fires, and grounding protection are not the primary functions of an AFCI.