EBK ELECTRICAL WIRING RESIDENTIAL
19th Edition
ISBN: 9781337516549
Author: Simmons
Publisher: CENGAGE LEARNING - CONSIGNMENT
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Textbook Question
Chapter 3, Problem 11R
What is the minimum number of 15-ampere lighting branch circuits required if the dwelling has an occupied area of 4000 ft2 (368 m2)? Show all calculations.
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What is the minimum number of 15-ampere lighting branch circuits required if the dwelling has an occupied area of 400 ft2(368m2)
What is the maximum number of 15 ampere lighting circuits required if the dwelling has an occupied area of 4000-sq.ft.
an office building has an area of 36,000 sqft, and the number of receptacles is unknown. How many 2-wire, 20-ampere, 120-volt circuits do you need to plan for to supply both the lighting loads and the receptacles?
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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- Approximately how many feet (meters) of 2-wire cable and 3-wire cable are needed to complete the circuit supplying the Master Bedroom? Two-wire cable: ___________ ft (___________ m). Three-wire cable: ___________ ft (___________ m).arrow_forwardThe total estimated volt-ampere load of the garage lighting branch circuit B14 draws how many amperes? Show your calculations.______________________________ __________________________________ __________________________________arrow_forwardAssuming that an outlet box for the entry ceiling has a fixture stud but has external cable clamps, what size box could be installed? Show calculations for both metal and nonmetallic boxes. ___________arrow_forward
- NEC 210.12(A) requires AFCI protection for the branch-circuit wiring that supplies all electrical outlets in specific rooms in dwellings. The branch circuits serving which areas, locations, or rooms in dwellings are not required to have AFCI protection?arrow_forwardA ladder is used to reach the top of a building 16 feet tall. What distance should the bottom of the ladder be placed from the side of the building?arrow_forwardIn a single-family dwelling, how is overcurrent protection for branch circuits required to be provided? See NEC 210.20. __________arrow_forward
- May the 20-ampere small-appliance branch circuits in the kitchen of a residence also supply the lighting above the kitchen sink and under-cabinet lighting? Check the correct answer. Yes______ No ______arrow_forwardWhat is the demand load for the service for two 3.5-kW wall-mounted ovens and one 5-kW counter-mounted cooking unit ? All of the appliances are supplied from a single branch circuit and are located in the same room of a one-family dwellingarrow_forwardThe minimum working space width in front of service equipment installed in a house must be ______ inches wide or the width of the equipment, whichever is greater. The minimum amount of clear space in front of service equipment must be at least ______ feet. This space must be maintained to a height from the floor of ______ feet. Name the NEC® section that covers these requirementsarrow_forward
- Calculate the voltage drop of a 120/240-volt, three-wire underground residential service installed with 2 AWG aluminum URD cable if the load is 80 amps and the one-way length of the underground service conductors is100 feet.arrow_forwardA sound level meter is placed in front of a loudspeaker of a 60W audio system reads 70dB. All else being equal, when placed in front of a 120W system, the meter will read ________?arrow_forwardWhen outdoor receptacles are installed where a cord will be plugged in permanently, such as in the case of decorative lighting, the cover must provide weatherproof integrity when the cord is plugged in. True or false? (Circle your answer and provide the NEC reference if the statement is true.) NEC ______________.arrow_forward
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