EBK ELECTRICAL WIRING RESIDENTIAL
19th Edition
ISBN: 9781337516549
Author: Simmons
Publisher: CENGAGE LEARNING - CONSIGNMENT
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Textbook Question
Chapter 12, Problem 11R
How many circuit conductors enter the box
- a. where the range hood will be installed? _________________
- b. in the ceiling box over which the track will be installed? _________________
- c. at the switch location to the right of the sliding door? _________________
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Equipment Grounding
10. Which of the following statements about ground faults is true?A. They usually occur between any grounded circuit conductor and the equipment grounding conductor. B. They're often normal and typically intentional.C. They can't result from human error.D. They can happen if a conductive tool is dropped in an energized equipment's electrical enclosure.
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.
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
Chapter 12 Solutions
EBK ELECTRICAL WIRING RESIDENTIAL
Ch. 12 - If everything on Circuit B7 were turned on, what...Ch. 12 - From what panelboard does the kitchen lighting...Ch. 12 - How many luminaires are connected to the kitchen...Ch. 12 - What color fluorescent lamps are recommended for...Ch. 12 - a. What is the minimum number of 20-ampere...Ch. 12 - Prob. 6RCh. 12 - Prob. 7RCh. 12 - Duplex receptacles connected to the 20-ampere...Ch. 12 - Prob. 9RCh. 12 - A fundamental rule regarding the grounding of...
Ch. 12 - How many circuit conductors enter the box a. where...Ch. 12 - Prob. 12RCh. 12 - Where is the speed control for the range hood fan...Ch. 12 - Who is to furnish the range hood? _____Ch. 12 - Prob. 15RCh. 12 - Complete the wiring diagram, connecting...Ch. 12 - Each 20-ampere small-appliance branch-circuit load...Ch. 12 - a. The Code requires a minimum of two...Ch. 12 - According to 210.52, no point along the floor line...Ch. 12 - Prob. 21RCh. 12 - Electric fans produce a certain amount of noise....Ch. 12 - Prob. 23RCh. 12 - Prob. 24RCh. 12 - Prob. 25RCh. 12 - Prob. 26RCh. 12 - Prob. 27RCh. 12 - The following is a layout for the lighting circuit...
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- 2. 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_forward12. Which of the following statements about ground faults is true?A. They can happen if a conductive tool is dropped in an energized equipment's electrical enclosure.B. They usually occur between any grounded circuit conductor and the equipment grounding conductor.C. They can't result from human error.D. They're often normal and typically intentional.arrow_forwardA 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 IIIarrow_forward
- 12. A short circuit describes the condition where there's contact between theA. hot wire and the neutral wire.B. grounded conductor and the grounding wire.C. hot wire and the grounding wire.D. neutral wire and the grounded conductor. I'm not sure if it's the letter A or C, could you help me with the correct answer.arrow_forward14. A grounded circuit conductor and the equipment grounding conductor should always be joined at theservice by aA. steel raceway.B. main bonding jumper.C. bus bar.D. short length of aluminum conductor.arrow_forwardThe National Electrical Code® requires that all switching be done in the __________ circuit conductor. Select one: A. GROUNDED B. SWITCH LOOP C. GROUNDING D. UNGROUNDEDarrow_forward
- Follow the procedures in troubleshooting the defects and faults of an electric fan by filling in the missing steps.Doesn't rotate 1.___________ 2.____________ Check for Open AC cord or wiring3. ___________4.___________ Defective switch/electronic system control 5. _____________Defective module (system control).arrow_forward5. How many system bonding jumpers normally are there for a separately derived system that's grounded? A. ThreeB. TwoC. One D. Zero 6. How many grounded neutral conductors are in a 208Y/120 volt, 3-phase, 4-wire system? A. ThreeB. TwoC. One D. Four 7. Which of the following are sometimes installed as an emergency system, legally required standby system, or optional standby power system for a building or structure? A. GeneratorsB. Surge protection devices C. Surge arrestersD. Transformers 8. If the system bonding jumper in a DC system is a screw, what color must the screw be? A. WhiteB. RedC. Orange D. Green 9. If overcurrent protection is provided in the transformer of a separately derived system, which of the following statements is correct? A. An equipment grounding conductor must be run with the conductors between the transformer and the building's disconnect. B. There's no need for service equipment or a panelboard in the separate building.C. A ground electrode must…arrow_forward13. Which of the following is a method for identifying a grounding terminal for connecting an equipmentgrounding conductor to a device?A. The letters EGCB. A green octagonal nutC. A red pressure wire connectorD. A green screw with a hexagon headarrow_forward
- L1. Boxes are classified by type, construction, andA. installation location.B. luminaire support capability.C. number of knockouts.D. power rating L2. Which of the following devices must be placed at each end of an armored cable to prevent damage tothe conductors?A. An insulating sliderB. An insertion couplingC. An antishort bushingD. A metal loop fitting L3. Which of the following is the maximum cross-sectional conductor fill area for underfloor raceways?A. 50%B. 60%C. 40%D. 30%arrow_forwardHow many circuit wires enter the entry ceiling box? How many equipment grounding conductors enter the entry ceiling box?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_forward
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