EBK ELECTRICAL WIRING RESIDENTIAL
19th Edition
ISBN: 9781337516549
Author: Simmons
Publisher: CENGAGE LEARNING - CONSIGNMENT
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Chapter 6, Problem 7R
To determine
Choose the correct option from the given choices to find the type of GFCI protection that should be installed for residential use.
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f a grounding means does not exist in outlet, nongrounding-type receptacle can be replaced with GFCI device, but it must be marked " ."
A.Nongrounding GFCI
B. Externally Grounded
C. No Grounding Protection
D. GFCI Protected
Explain each option & Choose the correct option.
4) The _ calculated load is rarely placed on an electrical system.A. optionalB. standardC. total
5) What's the primary disadvantage of using copper conductors?A. CostB. AvailabilityC. Weight
6) You're evaluating the components of a multioccupancy building that won't have an on-site employee. To be compliant with the NEC, each occupant will need to have access to their ownA. service-disconnecting means.B. service conductor.C. cable attachment point.D. emergency fire water pump disconnect
..
The only way to reach any of the levels where ABC Company is located in a building with ten stories is to use the elevator. In addition, those on the ninth and tenth levels need to connect to a group of servers located on the eighth. Describe the best wiring for the lift shaft. Pick the best option if there is more than one and justify your decision. If you think that interfloor connections may need to operate at substantially greater rates in the future, you may want to reconsider your current option. What is the optimum media for unbounded data transfer requirements? Justify your response.
Chapter 6 Solutions
EBK ELECTRICAL WIRING RESIDENTIAL
Ch. 6 - Explain the operation of a ground-fault circuit...Ch. 6 - Prob. 2RCh. 6 - Where must GFCI receptacles be installed in...Ch. 6 - Prob. 4RCh. 6 - Prob. 5RCh. 6 - A homeowner calls in an electrical contractor to...Ch. 6 - Prob. 7RCh. 6 - Extremely long circuit runs connected to a GFCI...Ch. 6 - If a person comes in contact with the hot and...Ch. 6 - What might happen if the line and load connections...
Ch. 6 - Is a GFCI receptacle permitted be installed as a...Ch. 6 - Prob. 12RCh. 6 - Prob. 13RCh. 6 - Prob. 14RCh. 6 - Prob. 15RCh. 6 - Construction sites can be dangerous because of the...Ch. 6 - Prob. 17RCh. 6 - Prob. 18RCh. 6 - The term SPD is becoming quite common. What do the...Ch. 6 - Transients (surges) on a line can cause spikes or...Ch. 6 - Prob. 21RCh. 6 - Prob. 22RCh. 6 - Some line transients are not damaging to...Ch. 6 - Briefly explain the operation of an immersion...Ch. 6 - What range of leakage current must trip an IDCI?Ch. 6 - Prob. 26RCh. 6 - Other than for a few exceptions, the NEC requires...Ch. 6 - In an old house, an existing nongrounding...Ch. 6 - Prob. 29RCh. 6 - NEC 210.12(A) requires AFCI protection for the...Ch. 6 - When installing GFCI and AFCI circuit breakers in...Ch. 6 - Prob. 32RCh. 6 - Prob. 33RCh. 6 - A switch that is located inside a bedroom for an...Ch. 6 - Which of the following installations for a kitchen...Ch. 6 - The receptacle outlets in the garage are required...Ch. 6 - Two 125-volt receptacles on a 20-ampere, 120-volt...Ch. 6 - Prob. 38R
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- If a grounding means does not exist in an electrical outlet, a nongrounding-type receptacle can be replaced with a GFCI device, but it must be marked as "____." Select one: A. NONGROUNDING GFCI B. GFCI PROTECTED C. NO GROUNDING PROTECTION D. EXTERNALLY GROUNDEDarrow_forwardAll single-phase receptacles rated 150V to ground or less, 50A or less and three-phase receptacles rated 150V to ground or less, 100A or less installed [Fill-in-the-blank] of commercial occupancies shall have GFCI protection. Select one: a. on rooftops b. in bathrooms c. all of these d. in kitchensarrow_forwardall ____ receptacle outlets used in technical applications shall be gfci protacted .arrow_forward
- Write a project management report that includes surveying, excavation, groundwater extraction, blinding, Reinforcing and shutteering, and columns with pictures. Note: Make the report content for the parking building.arrow_forwardwhen calculating a dwelling lighting load on the "volt-ampere per ft2" basis, the receptacle load used for floor lamps, table lamps, and so fourtharrow_forwardReceptacles installed in bathrooms are required to be GFCI protected, either by installing GFCI receptacles or GFCI circuit breakers in the panelboard per... A. NEC 205.3 B. NEC 208.3 C. NEC 212.14 D. NEC 210.11(C) (3)arrow_forward
- In a 10-trunk circuit, there are 180 calls in one hour. The average holding time per call is 2 minutes. Calls that fail to seize a circuit are immediately dropped. If approximately 20% of the calls retry after failing to seize the circuit, determine the GoS. (Use of calculator is allowed)arrow_forwardAfter reduction, the current - caring capacity of a condenser is referred to as the___. A. ambience b. Allowable ampacity c. ampacity d. ambient ratingarrow_forward17. Where flexible cords are permitted by the code to be permanently connected, it is permissible to omit _for such cords. (a.) switches (b.) receptacles (c.) grounding connections (d.) GFCI protection 18. Listed or labeled equipment shall be installed, used, or both, in accordance with (a.) the fob specified (b.) the plans (c.) the instructions given by the authority having jurisdiction (d.) the instructions included in the listing or labeling 2 19. A grounding electrode connection that is encased in concrete or directly buried shall (a.) be made accessible (b.) be made only by exothermic welding (c.) be a minimum #4 bare (d.) not be required to be accessible 20. Wet niche or no niche lighting fixtures that are supplied by a flexible cord or cable shall all exposed noncurrent carrying metal parts grounded by an insulated copper equipment grounding conductor not smaller than the supply conductors and not smaller than (a.) #16 (c.) # 14 (b.) # 18 (d.) #12| 21. A two pole circuit breaker…arrow_forward
- 21.Which of the following wiring methods may be used inside the duct used for vapor removal and ventilation of commercial type cooking equipment? (a.) nonmetallic sheathed cable (b.) EMT (c.) rigid steel conduit (d.) none of these 22. Ground-fault circuit-interrupter (GFCI) protection is required in all of the following locations EXCEPT: (a.) kitchen receptacles in an office building lunchroom installed within 6’ of the sink (b.) kitchen receptacles in a dwelling installed to serve counter top surfaces 10’ away from the sink (c.) receptacles in an office building restroom which has only a basin and toilet (d.) receptacle provided for servicing a rooftop air conditioning unit on the roof of a warehouse 23. Where GFCI protection is located in the power supply cord for an outdoor portable sign, the ground-fault circuit interrupter shall be located within _____inches of the attachment plug. (a.) 6 (c.) 18 (b.) 12 (d.) 24arrow_forwardIn a 10-trunk circuit, there are 180 calls in one hour. The average holding time per call is 2 minutes. Calls that fail to seize a circuit are immediately dropped. Question: What is the amount of traffic in EBHC.arrow_forwardA ____shall be used to connect the equipment grounding conductors, the service equipment enclosures, and where the system is grounded, the grounded service conductor to the grounding electrode. (a.) bus bar ( b.) 5/8” ground rod (c.) neutral conductor (d.) grounding electrode cond. For equipment rated 1200 amperes or more 600 volts or less, and over 6 feet wide, containing overcurrent devices, switching devices, or control devices, there shall be one entrance not less than ____inches wide and 6 ½ feet high at each end. (a.) 24 (b.) 36 (c.) 30 (d.) 48 When calculating the conductor fill for strut-type channel raceway with internal joiners, the raceway shall be permitted to be filled to _____% of the cross-sectional area. (a.) 20 ( c.) 30 (b.) 25 (d.) 40arrow_forward
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EBK ELECTRICAL WIRING RESIDENTIALElectrical EngineeringISBN:9781337516549Author:SimmonsPublisher:CENGAGE LEARNING - CONSIGNMENT
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