EBK ELECTRICAL WIRING RESIDENTIAL
19th Edition
ISBN: 9781337516549
Author: Simmons
Publisher: CENGAGE LEARNING - CONSIGNMENT
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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
Chapter 30 Solutions
EBK ELECTRICAL WIRING RESIDENTIAL
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- a.2. Which of the following statements about grounding electrode conductors is true?A. They restrict the ground connection.B. They eliminate potential differences between conductive objects and the Earth electrode.C. They facilitate operation of overcurrent protective devices.D. They perform bonding between the Earth and grounded conductors.a.3. Main bonding jumpers are required to be made of _______ or other corrosion-resistant material.A. brassB. aluminumC. copperD. copper-clad aluminumarrow_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
- 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_forwardEquipment 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_forward
- Performance of lines is meant the determination of _______________ and_______________ of lines i need fast plsarrow_forwardQUESTION 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_forwardQUESTION 4 Conduits or raceways through which moisture may contact live parts shall be _____ at either or both ends. a. sealed b. bushed c. a or b d. pluggedarrow_forward
- If 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_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_forward
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EBK ELECTRICAL WIRING RESIDENTIALElectrical EngineeringISBN:9781337516549Author:SimmonsPublisher:CENGAGE LEARNING - CONSIGNMENT
EBK ELECTRICAL WIRING RESIDENTIAL
Electrical Engineering
ISBN:9781337516549
Author:Simmons
Publisher:CENGAGE LEARNING - CONSIGNMENT