Electrical Wiring Residential
18th Edition
ISBN: 9781285170954
Author: Ray C. Mullin, Phil Simmons
Publisher: Cengage Learning
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Question
Chapter 30, Problem 5R
To determine
Mention the NEC number which is used to regulate the wiring methods to bury around a swimming pool.
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6. Ferrous metal raceways or enclosures are made with _______ content.A. brass or aluminumB. steel or brassC. aluminum or ironD. iron or steel
To testing installation of grounds, the usual procedure is to connect one lead of the megohmmeter to one of the conductors, then the other lead is___.
A, connected to another conductor b, connected to the conduit or raceway c. Connected to a special grounding electrode on the megohmmeter d. Left unconnected
A means shall be provided in each metal box over 100 cubic inches for the connection of an equipment grounding conductor. The means shall be permitted to be ______.
a tapped hole
the cover screw
III. a screw used to mount the box
(a.) I only (c.) I & II only (b.) II only (d.) I, II or III
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- Overhead service-drop conductors must have a horizontal clearance of __ from a pool. A. 6 ft B. 10 ft C. 8 ft D. 4 ftarrow_forwardConductors other than service conductors must not be installed in the same____. A. Service raceway B. Service cable C. Enclosure D. A or Barrow_forward13. If an equipment bonding jumper is run external to a raceway, it must be less than _______ feet.A. 6B. 2C. 4D. 5arrow_forward
- Equipment Grounding 13. A metal elbow is a part of a nonmetallic, underground raceway. The elbow won't need to be grounded as long as it's encased in at least _______ inches of concrete. A. 4 B. 5 C. 2 D. 6 13 A. Which of the following can be in the form of a wire and is required to be installed with feeders and branch circuits? A. Phased neutral conductorB. Equipment grounding conductor C. Grounded neutral conductorD. Grounding electrode conductorarrow_forwardQUESTION 44 Metal wireways are sheet metal troughs with _____ for housing and protecting electric conductors and cable. a. none of these b. a or b c. removable covers d. hinged coversarrow_forwardPerformance of lines is meant the determination of _______________ and_______________ of lines i need fast plsarrow_forward
- QUESTION 3 We are running 3 wires and a ground in a RMC to a control panel with a 60 amp circuit breaker disconnect in the control panel. The conduit is run along the ceiling where the ambient air temperature is 100 degrees. The control panel feeds our secondary cooling pump. What size are the ungrounded conductors? All conductors have typeTHHN insulation.arrow_forwardIf a raceway contains five conductors, they allowable ampacity of the conductors must be derated by___%. A. 60 b. 70 c. 80 d. 90arrow_forwardA device used in kitchen serving hotels dining rooms club houses and restaurants is__________. a.) Grease basin b.) Yard basin c.) Garage basin d.) Oil catch basinarrow_forward
- Calculate the assigned values in the circuits below. E2 = ________ E3 = _________ E6 = _________ E9 = _________ E11 = ________ E13 = _________ RT = ________ R6 = __________ IT = _________ I5 = __________ I7 = _________ I10 = __________ PT = ________arrow_forwardWhere run across the top of floor joists or within ______ ft of the floor or floor joists across the face of rafters or studding, in an attic that has permanent stairs, nonmetallic-sheathed cable must be protected by substantial guard strips that are at least as high as the cable. Select one: A. 6 B. 7 C. 8 D. 5arrow_forwardType MC cable is manufactured in three broad types: interlocked metal tape, smooth tube, and ______________. I answered corrugated metallic sheath and I got an ex. what would be the answer then?arrow_forward
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