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NEC-Electrician: GFCI-vs-AFCI Protection
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Avg score: 81% Most missed: “Which statement is correct?”
GFCI (Ground-Fault Circuit Interrupter) protects people from shock by detecting small leakage current to ground (milliamps) and tripping fast. AFCI (Arc-Fault Circuit Interrupter) protects against fire by detecting arcing signatures (series/parallel arcs) and tripping when dangerous arcs are detected. GFCI = shock protection, ground-fault leakage; AFCI = fire protection, arc detection; locations required by code. Worked example (scenario): Bathroom receptacle: high shock risk → GFCI required. Bedroom receptacle circuit: arc/fire risk from damaged cords → AFCI often required (depending on... Show more
NEC-Electrician: GFCI-vs-AFCI Protection
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10 Questions

1. A wet-location shock hazard is best mitigated by:
2. Which is a common exam trap?
3. If a location requires both shock and arc protection, what’s common in practice?
4. Which statement is correct?
5. A damaged extension cord causing sparking in a wall could be mitigated by:
6. GFCI protection is primarily intended to prevent:
7. A bathroom receptacle is a classic location for:
8. AFCI protection is primarily intended to reduce risk of:
9. A bedroom general receptacle circuit is commonly associated with:
10. GFCI trip levels are typically in: