EBK ELECTRICAL WIRING RESIDENTIAL
19th Edition
ISBN: 9781337516549
Author: Simmons
Publisher: CENGAGE LEARNING - CONSIGNMENT
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Textbook Question
Chapter 28, Problem 11R
State four possible combinations of service equipment that meet the requirements of 110.9 and 110.10 of the Code.
- a. ______
- b. ______
- c. ______
- d. ______
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6.a. The general lighting load is based on a _______ per square foot basis.A. kilowattB. number of circuitsC. volt-ampereD. general illumination6.b. What's the primary disadvantage of using copper conductors?A. AvailabilityB. WeightC. CostD. Durability
11. Specific rules apply for the installation of _______, but no identification requirements for them exists.A. grounding electrode conductorsB. grounding electrodes.C. main bonding jumpers.D. equipment grounding conductors.
1. The only exception to the need for all information technology equipment to be satisfactorily grounded is where the equipment is
A. DC powered.B. backup generator powered. C. double-insulated.D. isolated equipment.
2. Which section of the National Electrical Code lists sizing requirements for wire-type equipment grounding conductors?
A. 250.66 B. 250.118 C. 250.4 D. 250.122
3. Which of the following statements about grounding electrical equipment is true?A. If no wire-type equipment grounding conductors are present with the branch circuits, the equipment grounding terminal bar
isn't required.B. Grounding electrical equipment increases the possibility of metal parts remaining energized.C. The nonmetal parts of some electrical equipment are required to be connected to an equipment grounding conductor. D. Equipment grounding conductors can be spliced together outside of a grounded metal box.
4. Which of the following is a condition that must be met in order to qualify for the exemption…
Chapter 28 Solutions
EBK ELECTRICAL WIRING RESIDENTIAL
Ch. 28 - What is the minimum size service for a one-family...Ch. 28 - Prob. 2RCh. 28 - Prob. 3RCh. 28 - Prob. 4RCh. 28 - Prob. 5RCh. 28 - Prob. 6RCh. 28 - Prob. 7RCh. 28 - List the standard sizes of fuses and circuit...Ch. 28 - Prob. 9RCh. 28 - Using the method shown in this unit, what is the...
Ch. 28 - State four possible combinations of service...Ch. 28 - Which Code section states that all overcurrent...Ch. 28 - All electrical components have some sort of...Ch. 28 - Arc-fault damage is closely related to the value...Ch. 28 - The utility company has provided a letter to the...Ch. 28 - While working on the main panelboard that is...Ch. 28 - Repeat problem 16 for a main service panel that...Ch. 28 - NEC ______________________________ generally...Ch. 28 - Prob. 19RCh. 28 - Prob. 20RCh. 28 - Overcurrent devices must be accessible. (True)...
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- Fill in the blanks: Q. Expansion of LSB is_____________.arrow_forwardThe circuit breaker cubicles illustrated in your reading material each contain____circuit breakers. A. Two B. Three C. Four D. Sixarrow_forward16. A complete circuit is often referred to as a(n) _____ circuit. Select one: A. OPEN B. SHORTED C. GROUNDED D. CLOSEDarrow_forward
- ____ current occurs when the system neutral is grounded improperly downstream from the service equipment. Select one: A. PHASED B. OBJECTIONABLE C. POSITIVE D. NEGATIVEarrow_forwardequipment grounding 1. The only exception to the need for all information technology equipment to be satisfactorily grounded is where the equipment is A. DC powered.B. backup generator powered. C. double-insulated.D. isolated equipment. 2. Which section of the National Electrical Code lists sizing requirements for wire-type equipment grounding conductors? A. 250.66 B. 250.118 C. 250.4 D. 250.122arrow_forwardThe parameters of the _________equivalent circuit are defined in general terms for any operating conditions. a.hybrid-pi b.hybrid c.re d.piarrow_forward
- 4.a. The ___ calculated load is rarely placed on an electrical system.A. optionalB. standardC. total 4.b. What's the primary disadvantage of using copper conductors?A. CostB. AvailabilityC. Weight 4.c. You're evaluating the components of a multioccupancy building that won't have an on-site employee. Tobe 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.arrow_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_forward13.a. What does Section 230.10 prohibit the use of for the support of overhead service conductors?A. Balcony railingsB. Trees and other types of vegetationC. Wooden fencingD. Lampposts 13.b. Section 230.6 establishes five conditions under which conductors can be physically located within abuilding or structure but can be considered _______ for the purposes of applying the Code requirements.A. protectedB. enabledC. chargedD. outsidearrow_forward
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