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Electrical Wiring Residential

Ray C. Mullin, Phil Simmons

Chapter 24

Gas and Oil Central Heating Systems - all with Video Answers

Educators

Chapter Questions

00:58

Problem 1

The residence in this text is heated with (Circle the correct answer.)
a. gas.
b. electricity.
c. oil.

Courtney Burson
Courtney Burson
Numerade Educator
01:01

Problem 2

The $N E C$ requires that the disconnecting means for central heating equipment, other than fixed electric space heating equipment, must comply with _____________ of _____________ _____________.

Narayan Hari
Narayan Hari
Numerade Educator
06:27

Problem 3

The $N E C$ in _____________ requires that a central heating system be supplied by _____________(a separate) (an individual) branch circuit. (Circle the correct answer.)

Khoobchandra Agrawal
Khoobchandra Agrawal
Numerade Educator
00:27

Problem 4

In a home, the low-voltage wiring between the thermostat and furnace is (Circle the correct answer.)
a. Class 1.
b. Class 2 .
c. Class 3.

Hast Aggarwal
Hast Aggarwal
Numerade Educator
00:49

Problem 5

Class 2 circuits are _____________-limited and are considered to be _____________ from _____________ hazard and from _____________.

Mrinal Rana
Mrinal Rana
Numerade Educator
01:13

Problem 6

The nameplate on a transformer will indicate whether or not it is a Class 2 transformer. (True) (False) (Circle the correct answer.)

Aman Gupta
Aman Gupta
Numerade Educator

Problem 7

If Class 2 conductors are insulated for 150 volts, and the power conductors are insulated for 600 volts, does the Code permit pulling these conductors through the same raceway?
(Yes) (No) (Circle the correct answer.) Give the NEC section number. _____________

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Problem 8

If you use 600 -volt rated conductors for Class 2 wiring, does the Code permit pulling these conductors through the same raceway as the power conductors? (Yes) (No) (Circle the correct answer.) Give the NEC section number. _____________

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04:00

Problem 9

The $N E C$ is very strict about securing anything to electrical raceways. Name the Code sections that prohibit this practice. NEC ________________________________________________________________________________________________________________

Yaqub Khan
Yaqub Khan
Numerade Educator

Problem 10

Does the Code permit attaching the low-voltage thermostat cable to the EMT that brings power to a furnace? (Yes) (No) (Circle the correct answer.) Give the NEC section numbers. ________________________________________________________________________________________________________________

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02:49

Problem 11

Explain what a thermocouple is and how it operates. ________________________________________________________________________________________________________________

Shahab Ullah
Shahab Ullah
Numerade Educator