Electrical Wiring Residential
18th Edition
ISBN: 9781285170954
Author: Ray C. Mullin, Phil Simmons
Publisher: Cengage Learning
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Textbook Question
Chapter 23.2, Problem 11R
The disconnect for an air conditioner or heat pump must be installed ____________ of the unit.
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Chapter 23 Solutions
Electrical Wiring Residential
Ch. 23.1 - a. What is the allowance in watts made for...Ch. 23.1 - What are some of the advantages of electric...Ch. 23.1 - List the different types of electric heating...Ch. 23.1 - There are two basic voltage classifications for...Ch. 23.1 - What device is required when the total connected...Ch. 23.1 - Prob. 6RCh. 23.1 - Prob. 7RCh. 23.1 - A certain type of control connects electric...Ch. 23.1 - What advantages does a 240-volt heating unit have...Ch. 23.1 - The white wire of a cable may be used to connect...
Ch. 23.1 - Receptacle outlets furnished as part of a...Ch. 23.1 - The branch circuit supplying a fixed electric...Ch. 23.1 - Prob. 13RCh. 23.1 - For ballpark calculations, the wattage output of a...Ch. 23.1 - A central electric furnace heating system is...Ch. 23.1 - What section of the Code provides the correct...Ch. 23.1 - Electric heating cable embedded in plaster, or...Ch. 23.2 - Prob. 1RCh. 23.2 - Prob. 2RCh. 23.2 - Prob. 3RCh. 23.2 - a. Must an air conditioner installed in a window...Ch. 23.2 - Prob. 5RCh. 23.2 - What is the Code requirement for receptacles...Ch. 23.2 - Prob. 7RCh. 23.2 - When the nameplate on an air-conditioning unit...Ch. 23.2 - Prob. 9RCh. 23.2 - Match the following terms with the statement that...Ch. 23.2 - The disconnect for an air conditioner or heat pump...
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- What size overcurrent device protects the air-conditioning unit?arrow_forward45. A switch or circuit breaker can be used as both the controller and disconnecting means if it a. opens all ungrounded conductors as required by NEC 430.103 b. is protected by an overcurrent device in each ungrounded conductor c. is manually operable, or both power and manually operable d. All of these answersarrow_forwardIn an inverted configuration, the current wire is ___________ to the power supply and the voltage wire is connected to the process meter for voltage output.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 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_forwardThe easiest place to install an ammeter into a stepper motor driver/motor circuit for system diagnostics is to attach the meter in series with the driver’s power supply lead. remove a fuse and place the meter leads across the fuse clips. disconnect a motor lead and attach the meter in series with that lead. connect the meter across the center tap and phase leads of the motor.arrow_forward
- Determine 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_forwardIf two 115-volt loads were connectedin parallel with 240 volts, they would__________.a. burn dimlyb. immediately burn outc. burn correctlyd. none of the abovearrow_forwardPlease answer all subpart Thanks sirarrow_forward
- A(n) ___________ is a device that detects when a person has entered a room and switches on the room lighting.Select one:A. DIMMER SWITCHB. OCCUPANCY SENSORC. FOUR-WAY SWITCHD. SINGLE-POLE SWITCHarrow_forward5. An automatic switch or cutout is allowed in the equipment grounding conductor circuit when A. there's a redundant equipment grounding conductor in the circuit. B. the power sources are disconnected when operated. C. it's bonded around the disconnecting device. D. it also opens the neutral.arrow_forward8. Connect the Electronic VOM, set to the ammeter function on the 15mAdc range,between points A and D.9. Close switch S1. Measure current IAB. IAB = 19.5 mAdc 10. Measure current IAD flowing through resistor R1. IAD = 14.8 mAdcAre currents IAB and IAD entering or leaving point A? __________ Is the sum of currents IAB and IAD equal to total current IT? __________Is the current IAB entering or leaving a junction point B? __________arrow_forward
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