EBK ELECTRICAL WIRING RESIDENTIAL
19th Edition
ISBN: 9781337516549
Author: Simmons
Publisher: CENGAGE LEARNING - CONSIGNMENT
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Chapter 22.3, Problem 3R
To determine
Name the conductor size that feeds the hydromassage bathtub.
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What follows is a numeric fill in the blank question with 3 blanks.
Figure 1 shows the three phases V-t graph in Turkey. Please write the indicated values with their units in boxes and Voltage - time function of each phase in table below. Please write the units in the second box.
1= _______________ V
2= ________________ms
3= _______________ms
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 conductor
6. Ferrous metal raceways or enclosures are made with _______ content.A. brass or aluminumB. steel or brassC. aluminum or ironD. iron or steel
Chapter 22 Solutions
EBK ELECTRICAL WIRING RESIDENTIAL
Ch. 22.1 - Prob. 1RCh. 22.1 - Prob. 2RCh. 22.1 - Prob. 3RCh. 22.1 - Prob. 4RCh. 22.1 - Prob. 5RCh. 22.1 - Prob. 6RCh. 22.1 - Prob. 7RCh. 22.1 - Prob. 8RCh. 22.1 - Prob. 9RCh. 22.1 - Prob. 10R
Ch. 22.1 - Prob. 11RCh. 22.1 - Prob. 12RCh. 22.2 - Prob. 1RCh. 22.2 - Prob. 2RCh. 22.2 - Prob. 3RCh. 22.2 - Prob. 4RCh. 22.2 - Prob. 5RCh. 22.2 - Prob. 6RCh. 22.2 - Prob. 7RCh. 22.2 - Prob. 8RCh. 22.2 - Prob. 9RCh. 22.2 - Prob. 10RCh. 22.2 - Prob. 11RCh. 22.2 - Prob. 12RCh. 22.3 - Prob. 1RCh. 22.3 - Which of the following statements Meets Code?...Ch. 22.3 - Prob. 3RCh. 22.3 - Prob. 4RCh. 22.3 - Prob. 5RCh. 22.3 - Prob. 6RCh. 22.3 - Prob. 7RCh. 22.3 - Prob. 8R
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- A cable one mile long and 0.50 inches in diameter is composed of a steel core 0.25 inches in diameter and the outside shell is aluminum. The resistance of the cable is _____ is Ps and Pa 57.4 and 17.5-ohm Cmil/ft, respectively Choices: a.) 0.447 ohm c.) 0.625 ohm b.) 0.893 ohm d.) 5.3 ohmsarrow_forwardAs permitted, installing cables of entirely nonmetallic sheaths into the top of a surface-mounted enclosure through one or more nonflexible raceways, the raceways shall be not less than ________ and not more than __________ in length, provided they meet all of the following conditions: Nonmetallic-sheathed cable secured within __________ in. from where it emerges from the raceway. The raceway comes out of the top of the enclosure and making sure it does not penetrate a ___________ . A fitting is needed at each end of the raceway, and it must remain accessible after the install in order to protect against _____________. Raceways must be _____________ or ___________ to prevent access into the enclosure through the raceway. The cable sheath must be ____________ and extend into the enclosure at least a _____________ in. The raceway must be _____________. When cable(s) are installed in raceways as mentioned above, what NEC Table and Chapter provide guidance on the cable fill require- ments…arrow_forwardIf a grounding electrode conductor is connected at the first system disconnecting means or overcurrent device, the bonding jumper is sized the same as the ____. Select one: A. EQUIPMENT BONDING JUMPER B. POSITIVE CONDUCTOR C. SUPPLY-SIDE BONDING JUMPER D. NEUTRAL CONDUCTORarrow_forward
- 6. Which of the following statements about bonding is true?A. The strike terminals of a lightning protection system must be bonded to the building or structure grounding electrode system.B. Bonding requirements on the supply side of the service disconnect are less restrictive.C. Wire-type supply-side bonding jumpers are usually short in length and installed from the service-entrance conductor to asingle raceway.D. Metal water piping systems have one set of rules in the National Electrical Code.arrow_forward___________ is an Area on a device characteristic where the ratio between applied voltage and resulting current is constant.arrow_forwarda.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_forward
- 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 unconnectedarrow_forwardService conductors must be sized at no less than ________percent of the continous load, plus 100 percent of the noncontinous load. A. 100 B. 115 C. 125 D. 150arrow_forwardOverhead service-drop conductors must have a horizontal clearance of __ from a pool. A. 6 ft B. 10 ft C. 8 ft D. 4 ftarrow_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_forward7.A. Ferrous metal raceways or enclosures are made with _______ content.A. steel or brassB. aluminum or ironC. brass or aluminumD. iron or steel7.B. The size of a grounding electrode conductor for a service or separately derived system is generally basedon the size of the largestA. ungrounded supply conductor.B. equipment grounding conductor.C. grounded electrode.D. bonding jumper.7.C. Which of the following statements about bonding is true?A. The joint or termination must offer opposition in the circuit for effective electrical connections.B. Effective bonding keeps impedance high if a fault should occur.C. The entire electrical safety circuit is only as good as its strongest bonded link.D. Bonding connections must endure high levels of fault current until overcurrent protective devices can operate.arrow_forward16.a. When conductors enter device boxes, a conductor-free length of _______ inches must be allowed fromthe point it enters the box to the end of the conductor.A. 4B. 10C. 6D. 816.b. Metal elbows installed in nonmetallic raceways aren't required to be connected to the grounded systemor electrode conductor when they're at least _______ inches below grade.A. 18B. 24C. 36D. 12arrow_forward
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EBK ELECTRICAL WIRING RESIDENTIALElectrical EngineeringISBN:9781337516549Author:SimmonsPublisher:CENGAGE LEARNING - CONSIGNMENT
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ISBN:9781337516549
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