ELECTRICAL WIRING:RESIDENTAL-6 PLANS
18th Edition
ISBN: 9781305098329
Author: MULLIN
Publisher: CENGAGE L
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Textbook Question
Chapter 7, Problem 4R
Recessed luminaires are available for installation in direct contact with thermal insulation. These luminaires are required to be marked “Type ________________________.”
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1. A14/2 type copper used for a general lighting branch circuit. Ampacity:______________ Maximum Fuse or Circuit Breakers Sizes:________________ 2.Three 8 AWG copper conductors with THHN insulation Installed in garage in electrical metallic tubing (EMT). The ambient temperature in the garage can reach as high as 110'F. All termination points for this circuit are rated 60'C. Ampacity:______________ Maximum Fuse or Circuit Breakers Sizes:________________ 3.Four 4 AWG copper conductor with THWN insulation imstalled in EMT in a basement. All termination points are rated at 60'C.
Ampacity:______________ Maximum Fuse or Circuit Breakers Sizes:________________ 4. An 8/3 Type UF copper cable installed underground from a house to a detached garage to feed a 120/240-volt subpanel. All termination points are rated at 60'C.…
___________ is an Area on a device characteristic where the ratio between applied voltage and resulting current is constant.
All recessed incandescent luminaires must be equipped with factory - installed terminal protection, unless the luminaire is identified for use and installed in____.a. copper b. Aluminum c. Stainless steel d. Poured concrete
Chapter 7 Solutions
ELECTRICAL WIRING:RESIDENTAL-6 PLANS
Ch. 7 - Is it permissible to install a recessed luminaire...Ch. 7 - If a recessed luminaire without an integral...Ch. 7 - Thermal insulation is not permitted to be...Ch. 7 - Recessed luminaires are available for installation...Ch. 7 - Unless specifically designed, all recessed...Ch. 7 - Plans require the installation of surface-mounted...Ch. 7 - A recessed luminaire bears no marking indicating...Ch. 7 - Prob. 8RCh. 7 - Additional backup protection for ballasts can be...Ch. 7 - Prob. 10R
Ch. 7 - The Code places a maximum open-circuit voltage on...Ch. 7 - The letter E in a circle on a ballast nameplate...Ch. 7 - A 120-volt lamp fluorescent ballast for two...Ch. 7 - Can an incandescent lamp dimmer be used to control...Ch. 7 - A good rule-of-thumb to estimate the expected life...Ch. 7 - A post light has a 120-volt, 60-watt lamp...Ch. 7 - Define the following terms. a. A tap conductor is...Ch. 7 - Circle the correct answer for the following...Ch. 7 - Circle the correct answer for the following...
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