In order to prevent a duct-mounted electric heater from being energized when the fan is not on, a(n) ____________________ should be used.
Fill in the blank(s) with the appropriate word(s).
interlock
Trades & Technology
You might also like to view...
In the SI system, what is the prefix corresponding to ten times the base unit?
A. deka B. hecto C. kilo D. mega
Trades & Technology
Worldwide, about ____ breeds of horses exist.
A. 200 B. 300 C. 400 D. 500
Trades & Technology
What is torque?
What will be an ideal response?
Trades & Technology
There are two areas into which the properties of matter can be divided:
A) Pressures above and below atmospheric pressure. B) Specific gravity and specific volume. C) Physical and chemical. D) Temperatures above and below 70°F.
Trades & Technology