Electrical Wiring Residential
18th Edition
ISBN: 9781285170954
Author: Ray C. Mullin, Phil Simmons
Publisher: Cengage Learning
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Textbook Question
Chapter 3, Problem 5R
What spaces are not included in the floor area when calculating the load in volt-amperes per square foot? See NEC 220.12. __________
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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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- What dimensions are used when measuring the area of a building? See NEC 220.12.arrow_forwardIf two 115-volt loads were connectedin parallel with 240 volts, they would__________.a. burn dimlyb. immediately burn outc. burn correctlyd. none of the abovearrow_forwardThe circuit breaker cubicles illustrated in your reading material each contain____circuit breakers. A. Two B. Three C. Four D. Sixarrow_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_forward13. If an equipment bonding jumper is run external to a raceway, it must be less than _______ feet.A. 6B. 2C. 4D. 5arrow_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. If approximately 20% of the calls retry after failing to seize the circuit, determine the GoS. (Use of calculator is allowed)arrow_forward
- - Loads, Service, and Overcurrent Protection 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. Durabilityarrow_forwardAfter reduction, the current - caring capacity of a condenser is referred to as the___. A. ambience b. Allowable ampacity c. ampacity d. ambient ratingarrow_forwardA double-oven electric range is rated at 18 kW, 120/240 volts. Calculate the maximum demand according to Table 220.55. Show all calculations. For the range discussed in problem 1: What size 60°C ungrounded conductors are required? What size 60°C neutral conductor is required? What size 75°C ungrounded conductors are required? The terminal block and lugs on the range, the branch-circuit breaker, and the panelboard are marked as suitable for 75°C wire. What size 75°C neutral conductor is required? Terminations are the same as in part (c).arrow_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_forwardWhat follows is a numeric fill in the blank question with 3 blanks. Figure 1 shows the three phases V-t graph in Turkey. Please write the indicated values with their units in boxes and Voltage - time function of each phase in table below. Please write the units in the second box. 1= _______________ V 2= ________________ms 3= _______________msarrow_forwardWhat color are the faceplates in the bathrooms? Refer to the specifications. ________________arrow_forward
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