Electrical Wiring Residential
18th Edition
ISBN: 9781285170954
Author: Ray C. Mullin, Phil Simmons
Publisher: Cengage Learning
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Chapter 21.1, Problem 11R
To determine
Explain whether the branch circuit of waste disposer is required to be provide with AFCI protection or not.
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Electrical Wiring Residential
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- 1. A14/2 type copper used for a general lighting branch circuit. Ampacity:______________ Maximum Fuse or Circuit Breakers Sizes:________________ 2.Three 8 AWG copper conductors with THHN insulation Installed in garage in electrical metallic tubing (EMT). The ambient temperature in the garage can reach as high as 110'F. All termination points for this circuit are rated 60'C. Ampacity:______________ Maximum Fuse or Circuit Breakers Sizes:________________ 3.Four 4 AWG copper conductor with THWN insulation imstalled in EMT in a basement. All termination points are rated at 60'C. Ampacity:______________ Maximum Fuse or Circuit Breakers Sizes:________________ 4. An 8/3 Type UF copper cable installed underground from a house to a detached garage to feed a 120/240-volt subpanel. All termination points are rated at 60'C.…arrow_forwardThe NEC requires that a ____________ means be provided for standby power systems. In the case of portable gen sets, this might be as simple as pulling out the plug on the extension cord that is plugged into the receptacle on the gen set. For permanently installed standby power generators, this might be on the gen set and/or separately provided inside or outside of the home.arrow_forwardHow many lighting branch circuits are provided in this dwelling? __________ a. What is the minimum load allowance for small-appliance circuits for dwellings? See NEC 220.52(A). __________ b. An individual 15-ampere branch circuit is run to the receptacle outlet behind the refrigerator instead of connecting it to one of the two 20-ampere small-appliance branch circuits that are required in kitchens. For this separate circuit, an additional 1500 volt-amperes (shall) (does not have to) be added to the load calculations for dwellings. (Circle the correct answer.)arrow_forward
- oleg is using a multimeter to test the circuit branch he's just installed. after turning off the current to the circuit at the service panel, he'll first attach one probe to the ----- in the end of the run. a. black wire b. box c. white wire d. ground wire Please answer with explanation In typing formatarrow_forwardQuestion 6 B Thevenin’s Theorem RL what VTH RTH Full explain this question very fast solution sent me step by step Not:- Text typing work only and Don't ignore any part all part work uarrow_forwardElectrical plants Define the terms "Main column ." " Line ." " Protection earth " and " Operating eartharrow_forward
- 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 Barrow_forward2. Imagine that you're asked to install an auxiliary grounding electrode at the base of a lighting pole in aparking lot. This auxiliary grounding electrode will be connected to theA. lighting pole's electrical service equipment grounding conductor.B. electrical service's grounding electrode conductor.C. next lighting pole's auxiliary grounding electrode.D. lighting pole's neutral conductor.arrow_forwardWhat assumptions can you make regarding the following receptacle wiring? Check all that apply. White neutral wire Grounding screw Brass screw terminal Silver screw terminal Black hot wire Red hot wire Grounding wires Grounding screw terminal O device is at end-of-run device box does not need a ground connection this is a split-circuit receptacle neutral side receptacle tab must be removedarrow_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_forwardFour electricians are discussing wiring under raised floors in information technology equipment rooms. Electrician A says that wiring under the raised floor requires fire-resistant walls, floors, and ceilings between other occupancies. Electrician B says that wiring under the raised floor requires fire resistant halfway up the walls and floors between other occupancies. Electrician C says that the room must employ a disconnecting means that removes half of the power to all equipment in the room. Electrician D says that a disconnecting means isn't necessary for the room. Which of the following statements is correct? A. Electrician B is correct. B. Electrician D is correct. C. Electrician A is correct. D. Electrician C is correct.arrow_forwardDetermine the proper size of copper wire conductor necessary to apply a 750 W electric motor that is located 100 feet from the panel board. The voltage at the panelboard is 120 volts. The permissible line drop is 1.2 volts. (for your final answer: no decimal places and unit to have one common answer)arrow_forward
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