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Residential Wiring chapter 15,19 & 22 Exam Questions and Answers
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Residential Wiring chapter 15,19 & 22 Exam
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Residential Wiring chapter 15,19 & 22Exam
1. A "unit switch" used as a disconnecting means for an appliance shall ____. - Answer
-interrupt all ungrounded circuit conductors
2. A duplex grounding-type receptacle is usually installed in an accessible location
under the sink for plugging in the dishwasher and food waste disposer, and it does not
have to be ____ protected. - Answer -GFCI
3. A feeder or service neutral load can be figured at ____ of the load on the ungrounded
conductors for ranges and ovens. - Answer -70 percent
4. A raised plaster cover (often called a plaster ring or mud ring) is permitted to increase
the maximum number of conductors permitted in an outlet box when it is ____. - Answer
-marked with its cubic-inch volume
5. All 125-volt, 15- and 20-ampere receptacles installed to serve a kitchen countertop
are required ____. - Answer -to be supplied by at least two 20-ampere small appliance
circuits; to have GFCI protection for personnel
6. All of the following are acceptable disconnecting means for appliances, except for
____. - Answer -a horsepower-rated switch
7. Article ____, Part VI, covers equipment grounding and equipment grounding
conductors. - Answer -250
8. Because of the dangers associated with the open neutral (grounded conductor), NEC
300.13(B) does not permit the continuity of the ____ conductor to depend on a
receptacle. - Answer -grounded (neutral)
9. Cord sets rated 30 amperes are usually called ____cords, and cord sets rated 40, 45,
or 50 amperes are called ____ cords. - Answer -dryer, range
10. Cord-and-plug-connected appliances shall not exceed ____ percent of the branch-
circuit rating. - Answer -80
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