EBK ELECTRICAL WIRING RESIDENTIAL
19th Edition
ISBN: 9781337516549
Author: Simmons
Publisher: CENGAGE LEARNING - CONSIGNMENT
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Chapter 3, Problem 6R
What is the unit load per square foot for dwelling units? See Table 220.12. __________
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4.a. The minimum size service disconnect for a single-family dwelling isA. 200 A.B. 100 A.C. 60 A.D. 150 A.4.b. A single piece of equipment consisting of four or more receptacles must be calculated at not less than___ VA per receptacle.A. 90B. 24C. 12D. 50
What 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.
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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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- On site plans, all evevations are referenced from_. A. The centerline of a street B. Ground level C. A bench mark D. A test boringarrow_forwardWhat is the unit load per square foot for dwelling units.arrow_forwardPart 2: Analysis and selection of the Wind Turbine. The team decides at install a 30 MW wind farm. The turbine that has been selected by the local contractor is an Enercon wind turbine. The specifications of all the available Enercon wind turbine is shown in the attached datasheet. 1. Decide on the required number of wind turbines needed. 2. In your own words, explain what the Betz limit for wind turbines means.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_forward4.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_forwardA 174000W substation delivers 76000 W for 7 hours and it shut down for the rest of the day. Every 52 day of the year the station is shut down for maintenance. Calculate its percentage annual load factor Percentage Annual Load factor=_______________arrow_forward
- 6. Ferrous metal raceways or enclosures are made with _______ content.A. brass or aluminumB. steel or brassC. aluminum or ironD. iron or steelarrow_forwardAll of the following are NOT included when calculating the usable area of a dwelling to compute the required lighting load, EXCEPT for ____. Select one: a. open porches b. crawl spaces c. unfinished basements d. garagesarrow_forward6. According to the NEC, allowance for the future expansion of installations isA. an exception.B. in everyone's best interest.C. defined.D. a requirement.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_forward___________ is an Area on a device characteristic where the ratio between applied voltage and resulting current is constant.arrow_forwardWhat dimensions are used when measuring the area of a building? See NEC 220.12.arrow_forward
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