Electrical engineering What ampacity must all branch-circuit conductors used for wiring a ceiling outlet box be de-rated at?Select one:a.150° Cb.60° CC.75° Cd.90° CWhy do ceiling outlet boxes on which a fixture may be hung require a conductor insulation ratinghigher than the de-rated value of 60° C?Select one:а.because of the possibility of too many outlets on the same branch circuitb.because of the possibility of too much heat from the fixture lampС.because of the possibility of oversized fixture drawing more currentd.because of the possibility that the thermal protective device could fail

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What ampacity must all branch-circuit conductors used for wiring a ceiling outlet box be de-rated at? Select one: a. 150° C b. 60° C C. 75° C d. 90° C

Power System Analysis and Design (MindTap Course List)

6th Edition

ISBN:9781305632134

Author:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma

Publisher:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma

Chapter4: Transmission Line Parameters

Section: Chapter Questions

Problem 4.24P

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Concept explainers

Electrical Heating Unit

The conversion of electrical energy to heat energy is known as electric heating. The heating system that converts the electrical energy to heat energy for various application is called electrical heating unit. Electricity is employed as the firing mechanism in electric heating systems, which transforms electric current to heat. Electric heaters have heating elements in the form of electric resistors.

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Electrical engineering

What ampacity must all branch-circuit conductors used for wiring a ceiling outlet box be de-rated at?
Select one:
a.
150° C
b.
60° C
C.
75° C
d.
90° C
Why do ceiling outlet boxes on which a fixture may be hung require a conductor insulation rating
higher than the de-rated value of 60° C?
Select one:
а.
because of the possibility of too many outlets on the same branch circuit
b.
because of the possibility of too much heat from the fixture lamp
С.
because of the possibility of oversized fixture drawing more current
d.
because of the possibility that the thermal protective device could fail

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