ELECTRICAL WIRING:RESIDENTAL-6 PLANS
18th Edition
ISBN: 9781305098329
Author: MULLIN
Publisher: CENGAGE L
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Chapter 30, Problem 11R
To determine
Mention the height where the luminaires must be mounted above the swimming pool.
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In order to wire a post light, a homeowner purchased some single-conductor cable that was marked as suitable for direct burial in the ground. A separate equipment grounding conductor to the post light was not carried. Instead, the bottom of the metal post, buried 2 ft (0.6 m) into the ground, was used as a ground for the post light. The inspector “red tagged” (turned down) the installation. Who is right—the homeowner or the electrical inspector?
Explain.
If a recessed luminary without an integral junction boxes installed what extra wiring must be provided
8. 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? __________
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ELECTRICAL WIRING:RESIDENTAL-6 PLANS
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- Question 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_forwardThe recessed fluorescent luminaires installed in the ceiling of the recreation room of this residence are connected with trade size flexible metal conduit. These flexible connections are commonly referred to as fixture whips. Does the flexible metal conduit provide adequate grounding for the luminaires, or must a separate equipment grounding conductor be installed? ________________arrow_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_forward
- QUESTION 5 A duplex receptacle is installed on a 4-inch square raised metal cover and mounted on a 4-inch square metal box.If the grounding terminal of the receptacle is connected to the grounded metal box, which of the following requirements would also apply to the installation of the duplex receptacle? a It must be secured by at least two screws. b The single 6/32 screw holding it in the cover must be tight. c It must be secured directly to the 4 inch square box. d It is not permitted to be installed in raised covers.arrow_forwarda. The Code requires a minimum of two small-appliance circuits in a kitchen. Is it permitted to connect a receptacle in a dining room to one of the kitchen small-appliance circuits? _______________ What Code section applies to this situation? _______________ b. Are outdoor weatherproof receptacles permitted to be connected to a 20-ampere small-appliance circuit? _______________ c. Receptacles located above the countertops in the kitchen must be supplied by at least _______________ 20-ampere small-appliance circuits.arrow_forwardCOLUMN A COLUMN B A copper wiring containing 8 color-coded 1. conductors or 4 twisted pairs that offers greater bandwidth for local area networks. A. LEGEND 2. distribution device. A wiring pattern that connects to a central B. HOMERUN 3. Another term for an 8-pin modular jack. C. OVERCURRENT 4. A coaxial cable quad shielded with all copper center conductor used for cable TV. D. INSULATOR It is the maximum current that a conductor can 5. carry without exceeding its temperature rating. E. SHORT CIRCUIT 6. A wiring job where many cables enter a device or a junction box that is considered an unsafe practice in electrical wiring, F. CIRCUIT BREAKER 7. An electrical safety device designed to protect an electrical circuit from damage. G. ARC FLASH 8. unintended path with very low resistance. Occurs when an electrical current flows in an H. AMPACITY 9. amperage capacity of the circuit. Occurs when the current exceeds the rated I. UTP 10. A method of extending an electrical wire to the ground…arrow_forward
- The Code places a maximum open-circuit voltage on lighting equipment in oron homes. This maximum voltage is 600 750 1000. (Circle the correctanswer.) Where in the NEC is this voltage maximum referenced?arrow_forwardUse nodal analysis to determine each of the circuit parameters for the provided circuitarrow_forwardCircle the correct answer defining the type of location:arrow_forward
- The Code places a maximum open-circuit voltage on lighting equipment in or on homes. This maximum voltage is (600) (750) (1000). (Circle the correct answer.) Where in the NEC is this voltage maximum referenced? _______________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_forwardThe following problems pertain to luminaires in clothes closets. a. Does the Code permit bare incandescent lamps to be installed in porcelain key-less or porcelain pull-chain lampholders? ________________ b. Does the Code permit bare fluorescent lamp luminaires to be installed? ________________ c. Does the Code permit pendant lampholders to be installed? ________________ d. What is the minimum clearance from the storage area to surface-mounted incandescent luminaires? ________________ e. What is the minimum clearance from the storage area to surface-mounted fluorescent luminaires? ________________ f. What is the minimum distance between recessed incandescent or recessed fluorescent luminaires and the storage area? ________________ g. Define the storage area. ______________________________________ ______________________________________ ______________________________________ ______________________________________ ______________________________________ ______________________________________ h. If a clothes hanging rod is installed where there is access from both sides, such as might be found in a large walk-in clothes closet, define the storage area under that rod. ___________________________________ ___________________________________arrow_forward
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