ELECTRICAL WIRING:RESIDENT.-TEXT (PB)
19th Edition
ISBN: 9781337116213
Author: MULLIN
Publisher: CENGAGE L
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Chapter 8, Problem 5R
For residential wiring, not less than one 15-ampere lighting branch circuit should be provided for every ______________ ft2 of floor area. If 20-ampere lighting branch circuits are used, provide one 20-ampere lighting branch circuit for every _____________ ft2 of floor area.
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Chapter 8 Solutions
ELECTRICAL WIRING:RESIDENT.-TEXT (PB)
Ch. 8 - Prob. 1RCh. 8 - Prob. 2RCh. 8 - A good rule to follow is to never load a circuit...Ch. 8 - Prob. 4RCh. 8 - For residential wiring, not less than one...Ch. 8 - For this residence, what are the estimated...Ch. 8 - a. What is the ampere rating of circuit A16?...Ch. 8 - The NEC requires what type of unique protection...Ch. 8 - Prob. 9RCh. 8 - Prob. 10R
Ch. 8 - Prob. 11RCh. 8 - Prob. 12RCh. 8 - Is the switched portion of an outlet mounted...Ch. 8 - The following problems pertain to luminaires in...Ch. 8 - How many switches are in the bedroom circuit, what...Ch. 8 - The following is a layout of the lighting circuit...Ch. 8 - Prob. 17RCh. 8 - The Code uses the terms watts, volt-amperes, kW,...Ch. 8 - How many 14 AWG conductors are permitted in a...Ch. 8 - A 4 in. 1 in. octagon box has one cable clamp and...
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- For residential wiring, not less than one 15-ampere lighting branch circuit should be provided for every ____________ ft2 of floor area. If 20-ampere lighting branch circuits are used, provide one 20-ampere lighting branch circuit for every ____________ ft2 of floor areaarrow_forward11. 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_forward8.a. A grounded conductor is a conductor that has been _______ grounded.A. electronicallyB. accidentallyC. intentionallyD. partially8.b. Which of the following is a sheet-metal or nonmetallic enclosure equipped with hinged or removablecovers that's used to supplement wiring space?A. Auxiliary gutterB. Junction boxC. Trolley buswayD. Outlet boxarrow_forward
- 1. Alternating current systems of less than _______ volts are required to be grounded if they're installed outside as overhead conductors. A. 50 B. 100 C. 75 D. 120arrow_forwardReceptacle 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 groundingarrow_forwardGround fault protection of - equipment shall be provided for solidly grounded wye electrical services of more than 150 volts to ground, but not exceeding 1000V phase - to - phase for each service disconnecting means rated A. 1000 B. 1500 C. 2000 D. 2500 amperes or more.arrow_forward
- If two 115-volt loads were connectedin parallel with 240 volts, they would__________.a. burn dimlyb. immediately burn outc. burn correctlyd. none of the abovearrow_forward14. How many separate equipment grounding paths are required for branch circuits serving patient care spaces? A. One B. Two C. Four D. Threearrow_forwardTo interconnect grounding electrode and form grounding electrode system, connect the________ to a busbar. A. Neutral Disconnect link and their grounding electrode conductor B. Grounding electrode conductor and their bond jumpers C. Bounding jumpers and their equipment grounding conductors D. Equipment grounding conductors and their neutral Disconnect linkarrow_forward
- 12. Which of the following statements about ground faults is true?A. They can happen if a conductive tool is dropped in an energized equipment's electrical enclosure.B. They usually occur between any grounded circuit conductor and the equipment grounding conductor.C. They can't result from human error.D. They're often normal and typically intentional.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_forward5. How many system bonding jumpers normally are there for a separately derived system that's grounded? A. ThreeB. TwoC. One D. Zero 6. How many grounded neutral conductors are in a 208Y/120 volt, 3-phase, 4-wire system? A. ThreeB. TwoC. One D. Four 7. Which of the following are sometimes installed as an emergency system, legally required standby system, or optional standby power system for a building or structure? A. GeneratorsB. Surge protection devices C. Surge arrestersD. Transformers 8. If the system bonding jumper in a DC system is a screw, what color must the screw be? A. WhiteB. RedC. Orange D. Green 9. If overcurrent protection is provided in the transformer of a separately derived system, which of the following statements is correct? A. An equipment grounding conductor must be run with the conductors between the transformer and the building's disconnect. B. There's no need for service equipment or a panelboard in the separate building.C. A ground electrode must…arrow_forward
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