Electrical Wiring Residential
18th Edition
ISBN: 9781285170954
Author: Ray C. Mullin, Phil Simmons
Publisher: Cengage Learning
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Chapter 30, Problem 14R
To determine
Whether the requirements of bonding and grounding of electrical equipment in and around the hot tubs and spas are decided by the electrician or required as per the NEC.
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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.
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 format
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.
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- Provide a picture on the following parts of electrical plan. Location and Site Plans in a Drawing Sheet Legend or Symbols or Electrical Symbols in a Drawing Sheet General Notes and/or Specifications. Electrical Layout. Schedule of Loads One Line Diagram Title Blockarrow_forwardA device used in kitchen serving hotels dining rooms club houses and restaurants is__________. a.) Grease basin b.) Yard basin c.) Garage basin d.) Oil catch basinarrow_forwardWhich of the following statements about equipment grounding conductors (EGCS) is true? A. The National Electrical Code permits the EGC to also perform as a grounding electrode conductor. B. More than one EGC must be used if multiple circuits are installed in a single raceway, cable, or cable tray. C. No current should be present in the EGC during normal operation. D. EGCs are required to be decreased in size to address voltage drop.arrow_forward
- A 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_forwardCalculate the assigned values in the circuits below. E2 = ________ E3 = _________ E6 = _________ E9 = _________ E11 = ________ E13 = _________ RT = ________ R6 = __________ IT = _________ I5 = __________ I7 = _________ I10 = __________ PT = ________arrow_forward4.A. The insulation color of a grounded wire should beA. white.B. red.C. black. 4.B. A switch is always installed in a circuit so that it's connected to theA. grounding wire.B. ungrounded conductor.C. neutral wire.arrow_forward
- An isolator is used to: Select one: a. To be mounted on towers for insulation purpose b. All of the above c. to disconnect part of the system for maintenance from live circuit d. Insulate the wires to avoid electrocution and short circuits Clear my choicearrow_forward14. Severe burns, lung damage, eye damage, and hearing loss are all effects of what event? 8 am college class arc flash equipment failure lock-out tag-outarrow_forwardQUESTION 8 We are running 3 wires in an IMC to a control panel with a 150 amp circuit breaker disconnect in the control panel. The conduit is run 12 inches above the roof on a strut rack. The ambient air temperature is 88 degrees. This control panel feeds the #1 cooling fan. What sized ungrounded conductors do we need? All conductors have typeTHHN insulation.arrow_forward
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