A live-dead-live test is conducted in order to _____.
a. disconnect switches and fuses
b. verify the test instrument operation
c. make sure the capacitors are discharged
d. verify that a circuit is de-energized
d. verify that a circuit is de-energized
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?What is a polyswitch?
A. ?A new kind of stalk switch B. ?A PTC circuit protection device C. ?A multi-position toggle switch D. ?A programmable function, generic smart switch
A good way to learn something is to form discussion groups where you explain ideas and concepts in your own words to others in the group.
a. True b. False
Nominal 1/2" pipe has ______ threads.
Fill in the blank(s) with the appropriate word(s).
What is the purpose of a Tattle Tale?
A) To tell the technician if the limits have opened at any time during the unit's operation B) To prevent the limits from ever being exceeded in the furnace C) To tell the electric furnace to turn off if the limits have been exceeded D) To tell the technician if the furnace is turning on properly