Electrical Wiring Residential
18th Edition
ISBN: 9781285170954
Author: Ray C. Mullin, Phil Simmons
Publisher: Cengage Learning
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Question
Chapter 3, Problem 36R
To determine
Find whether the spacing difference between the points less than
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horizontal runs of IMC supported by openings through framing members at intervals not exceeding _____ ft and securely fastened within _____ ft of termination points shall be permitted.
Select one:
A. 1.5,4.5
B. 3,10
C. 2,5
D. 10,3
When 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 c
Receptacle and cord terminals should be marked as follows;A. “X” and “O” ungrounded, “W” grounded and “G” equipment groundingB. “Y” and “X” ungrounded, “N” grounded and “GR” equipment groundingC. “X” and “O” ungrounded, “W” grounded and “E” equipment groundingD. “X” and “Y” ungrounded, “W” grounded and “G” equipment grounding
Chapter 3 Solutions
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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- The arrangement of grounding connections shall ensure that the disconnection or the removal of a luminaire, receptacle, or other device fed from the box does not interrupt the electrical continuity of the ____________ providing an effective ground-fault current path. grounding conductor(s) ungrounded conductor(s) equipment grounding conductor(s) all of these.arrow_forwardEquipment Grounding 13. A metal elbow is a part of a nonmetallic, underground raceway. The elbow won't need to be grounded as long as it's encased in at least _______ inches of concrete. A. 4 B. 5 C. 2 D. 6 13 A. Which of the following can be in the form of a wire and is required to be installed with feeders and branch circuits? A. Phased neutral conductorB. Equipment grounding conductor C. Grounded neutral conductorD. Grounding electrode conductorarrow_forwardIf a recessed luminary without an integral junction boxes installed what extra wiring must be providedarrow_forward
- To answer the question, type your answers in RED or paste the image of your handwriting solution Given the circuit #1 presented above, answer the following questions: Determine the value of the VD (voltage forward of the LED) for the LEDs RED, VDRED, GREEN, VDGREEN and BLUE, VDBLUE, when the current through the LEDs is 10mA, VDRED = ____________ ; VDGREEN = ____________ ; VDBLUE = ____________ Is the LED in Circuit #1, connected in the way that will be lighting up or not – Justify your answer Type your answer here Calculate the value of the resistance Rled in Circuit #1, to ensure that a RED LED will have a current of 10 mA Type your answer here or paste the image of your handwriting solution here Calculate the value of the resistance Rled in Circuit #1, to ensure that a GREEN LED will have a current of 10 mA Type your answer here or paste the image of your handwriting solution here Calculate the value of the resistance Rled in Circuit #1, to ensure that…arrow_forward13. If an equipment bonding jumper is run external to a raceway, it must be less than _______ feet.A. 6B. 2C. 4D. 5arrow_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
- The coloring on individual conducting wires usually does not indicate a size or rating but rather the standard or preferred use of the wire. For example, black and red wires typically are used for currentcarrying or "hot" connections, and ___ wires usually are grounded "neutral" conductors. Green-insulated wires and bare copper wires are used for grounding wires.arrow_forwardHow many circuit wires enter the entry ceiling box? How many equipment grounding conductors enter the entry ceiling box?arrow_forwardA Type NM cable carries a branch circuit to the outside of a building, where it terminates in a metal weatherproof junction box. From this box, a short length of EMT is installed upward to another metal weatherproof junction box on which is attached a cluster of outdoor floodlights. The first box is located approximately 24 in. (600 mm) above the ground. To Meet Code, do the metal boxes and metal raceway have to be grounded? Yes _______________ No _______________ NEC _______________.arrow_forward
- The 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_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_forward21.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_forward
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