Residential Single-Phase Wiring: Basic Safety Quiz…

To protect the circuit from overcurrents and short circuits. — Circuit breakers protect against dangerous current situations.

Turn off the circuit breaker that controls the circuit you'll be working on. — De-energizing the circuit prevents electric shock.

Ground Fault Circuit Interrupter, protects against electric shock. — GFCIs detect ground faults and quickly shut off power.

Green or bare copper — The grounding wire provides a safe path for fault current.

Replace the cord immediately. — Frayed cords are a fire and shock hazard; replace them immediately.

Question 1 of 5

What is the primary purpose of a circuit breaker?

Circuit breakers protect against dangerous current situations.

Question 2 of 5

De-energizing the circuit prevents electric shock.

Question 3 of 5

GFCIs detect ground faults and quickly shut off power.

Question 4 of 5

The grounding wire provides a safe path for fault current.

Question 5 of 5

Frayed cords are a fire and shock hazard; replace them immediately.