EBK ELECTRICAL WIRING RESIDENTIAL
19th Edition
ISBN: 9781337516549
Author: Simmons
Publisher: CENGAGE LEARNING - CONSIGNMENT
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Question
Chapter 3, Problem 41R
To determine
Find whether the weatherproof outdoor receptacles must be GFCI protected for personnel protection.
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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.
QUESTION 9
When a ground wire is connected to an interior gas piping system and the underground portion of the gas pipe into the building is plastic, which of the following is (or are) true?
a
A.This would be approved by code as the gas pipe is only being bonded to the electrical system.
b
B.This installation would be approved by code, as the gas pipe is not a grounding electrode.
c
C.Both A and B
d
D.Neither A nor B
If a recessed luminary without an integral junction boxes installed what extra wiring must be provided
Chapter 3 Solutions
EBK ELECTRICAL WIRING RESIDENTIAL
Ch. 3 - Prob. 1RCh. 3 - How are branch circuits rated? See NEC 210.3._____Ch. 3 - Prob. 3RCh. 3 - Prob. 4RCh. 3 - What spaces are not included in the floor area...Ch. 3 - What is the unit load per square foot for dwelling...Ch. 3 - According to NEC 210.50(C), a laundry equipment...Ch. 3 - How is the total load in volt-amperes for lighting...Ch. 3 - How is the total lighting load in amperes...Ch. 3 - How is the required number of branch circuits...
Ch. 3 - What is the minimum number of 15-ampere lighting...Ch. 3 - How many lighting branch circuits are provided in...Ch. 3 - Prob. 13RCh. 3 - How is the load determined for outlets supplying...Ch. 3 - What type of circuits must be provided for...Ch. 3 - Prob. 16RCh. 3 - In a single-family dwelling, how is overcurrent...Ch. 3 - Prob. 18RCh. 3 - The minimum number of outdoor receptacles for a...Ch. 3 - The Code indicates the rooms in a dwelling that...Ch. 3 - Prob. 21RCh. 3 - Prob. 22RCh. 3 - Prob. 23RCh. 3 - Prob. 24RCh. 3 - Prob. 25RCh. 3 - Although the Code contains many exceptions to the...Ch. 3 - The rating of a branch circuit is based on (Circle...Ch. 3 - a. A 25-ampere branch-circuit conductor is derated...Ch. 3 - Prob. 29RCh. 3 - Prob. 30RCh. 3 - Prob. 31RCh. 3 - Prob. 32RCh. 3 - A split-level home has one stairway that has six...Ch. 3 - Prob. 34RCh. 3 - Prob. 35RCh. 3 - Prob. 36RCh. 3 - In the past, it was common practice to connect the...Ch. 3 - If a residence has two bathrooms, the Code states:...Ch. 3 - Prob. 39RCh. 3 - Prob. 40RCh. 3 - Prob. 41RCh. 3 - Prob. 42RCh. 3 - Prob. 43R
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- a. 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_forward2. 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_forwardAn 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_forward
- answer number 4 only.arrow_forward7. If a grounded surface metal box makes direct contact with the mounting strap for a switch or receptacle,then theA. bonding jumper can be undersized.B. neutral conductor will operate as the equipment grounding conductor.C. bonding jumper isn't required.D. device must be protected with a GFCI device.arrow_forward5. If a separate, wire-type equipment grounding conductor (EGC) is used for any reason, the EGC of a grounding-type receptacle must be connected to which of the following?A. The grounding terminal bar outside the service equipment enclosure in a grounded systemB. An EGC that's part of another branch circuit that originates from where the branch circuit for the receptacle originatesC. Any accessible point on the grounding electrode conductorD. The service conductor outside the service equipment enclosure in an ungrounded systemarrow_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_forwardWhen a three-conductor multi-wire circuit is used in place of two separate branch circuits to supply split-wired receptacles, the grounded (neutral) conductor is required to be ____. A. durably markedB. pigtailed so that its continuity does not depend on the presence of a wiring deviceC. connected to the white or silver-colored receptacle binding screwD. both b and carrow_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_forward
- 11. Which of the following statements about the use of structural steel as an equipment grounding conductor (EGC) in an AC system is correct? A. Structural steel can be used as an EGC when it's bonded at both ends.B. Structural steel isn't allowed for use as an EGC.C. Structural steel must have an EGC bonding jumper every three feet of structure. D. Structural steel can be used as an EGC bonding jumper between panelboards. 12. Which of the following statements about equipment grounding conductors is true? A. They increase voltages above ground potential on conductors and equipment enclosures during normal operation. B. Unacceptable equipment grounding conductors include conduit, tubing, and cable armor. C. They must be capable of withstanding the higher level of ground-fault current to perform their safety function. D. When they're far from their associated circuit conductors, impedance values are kept as low as possible during ground-fault conditions. 13. Imagine that…arrow_forwardQ34 Provide answers for the following: a) Differentiate between Planned preventive maintenance and condition based maintenance. b) List the condition monitoring tests used for: i. Circuit breakers ii. iv. Transformers Cables, and Busbars (need two examples for each category).arrow_forward3. Which of the following statements about the use of structural steel as an equipment grounding conductor(EGC) in an AC system is correct?A. Structural steel isn't allowed for use as an EGC.B. Structural steel can be used as an EGC bonding jumper between panelboards.C. Structural steel must have an EGC bonding jumper every three feet of structure.D. Structural steel can be used as an EGC when it's bonded at both ends.arrow_forward
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EBK ELECTRICAL WIRING RESIDENTIALElectrical EngineeringISBN:9781337516549Author:SimmonsPublisher:CENGAGE LEARNING - CONSIGNMENT
EBK ELECTRICAL WIRING RESIDENTIAL
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ISBN:9781337516549
Author:Simmons
Publisher:CENGAGE LEARNING - CONSIGNMENT