11.15: Quiz 14-Ground Fault Circuit Interrupter
1. True or False...Conductor insulation may be provided by placing non-conductive material such as rubber tape around the conductor.
2. True or False...Metal enclosures and containers are usually grounded by connecting them with a wire going to ground.
3. True or False...The ground fault circuit interrupter is a fast-acting circuit breaker which senses small imbalances in the circuit caused by current leakage to ground and in a fraction of a second, shuts off the electricity.
4. True or False...Double insulation may be used as additional protection on the live parts of a tool. Double insulation provides protection against defective cords and plugs or against heavy moisture conditions.
5. True or False...Whenever the amount of current is "going" differs from the amount "returning" by approximately 5 milliamps, the GFCI interrupts the electric power.
MULTIPLE CHOICE
6. The ________ will not protect a person from line to line contact hazards such as a person holding two hot wires or a hot and a neutral wire in each hand.
a. double-insulated plug b. conductors c. GFCI d. metal enclosure
7. When a cord connector is wet, ________ can occur to the equipment grounding conductor and to humans who pick up the connector if they also provide a path to ground.
a. shock b. hazardous leakage c. grounding d. deficiencies
8. ________ can be used successfully to reduce electrical hazards on construction sites.
a. GFCIs b. flex cord c. connector d. receptacle
9. Ground fault circuit interrupters must be provided for all ________ volt, single phase, 15 and 20 amp receptacle outlets on construction sites.
a. 100 b. 110 c. 120 d. 130