There are three lines of defense against refrigerant leaks in a service valve: the back seat, the packing gland, and the ____________________.
Fill in the blank(s) with the appropriate word(s).
protective cap
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When a circuit breaker lists two voltages, the ____________________ (higher/lower) is the voltage line to line.
Fill in the blank(s) with the appropriate word(s).
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What is a work point?
What will be an ideal response?
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The A7 test includes what subject material?
A) Engine repair B) Electrical systems C) Heating and air conditioning D) Engine performance
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Why are two sets of contacts (one set normally open and one set normally closed) needed on an indoor fan
relay? a. To allow high-speed operation in heating. b. To allow low-speed operation in cooling. c. To allow high-speed operation after a time delay. d. To ensure only one motor speed winding is energized at a time.
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