EBK ELECTRICAL WIRING RESIDENTIAL
EBK ELECTRICAL WIRING RESIDENTIAL
19th Edition
ISBN: 9781337516549
Author: Simmons
Publisher: CENGAGE LEARNING - CONSIGNMENT
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Chapter 18, Problem 25R
To determine

Explain whether the NEC code permits to fasten the raised cover to the receptacles.

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QUESTION 5 A duplex receptacle is installed on a 4-inch square raised metal cover and mounted on a 4-inch square metal box.If the grounding terminal of the receptacle is connected to the grounded metal box, which of the following requirements would also apply to the installation of the duplex receptacle?   a It must be secured by at least two screws.   b The single 6/32 screw holding it in the cover must be tight.   c It must be secured directly to the 4 inch square box.   d It is not permitted to be installed in raised covers.
QUESTION 8 Enclosures that are not over 100 cubic inches in size and which have two conduits supported within three feet on either side of the enclosure and the enclosure does not contain devices or support fixtures shall not be required to have the enclosure supported if the conduits are _____. a   installed with locknuts inside and outside enclosure b   shoulders of fittings outside and locknuts inside the box c   rigid nonmetallic conduits d   threaded into hubs identified for the purpose
QUESTION 9 When a ground wire is connected to an interior gas piping system and the underground portion of the gas pipe into the building is plastic, which of the following is (or are) true? a   A.This would be approved by code as the gas pipe is only being bonded to the electrical system. b   B.This installation would be approved by code, as the gas pipe is not a grounding electrode. c   C.Both A and B d   D.Neither A nor B
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EBK ELECTRICAL WIRING RESIDENTIAL
Electrical Engineering
ISBN:9781337516549
Author:Simmons
Publisher:CENGAGE LEARNING - CONSIGNMENT