Before it is considered a continuous load, a load must operate for at least how many hours without interruption?
a. 3
b. 10
c. 12
d. 24
a. 3
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How is the limit wired on a furnace that uses a line voltage limit?
A) The limit is wired in series with the gas valve. B) The limit is wired in series with the indoor fan motor. C) The limit is wired in series with the transformer secondary. D) The limit is wired in series with the transformer primary.
Dividing the required number of 1-cubic-foot bags of cement by 8 provides an estimate of the number of cubic yards of masonry sand needed.
Answer the following statement true (T) or false (F)
To make combustion efficiency tests, a hole must be made ____.
A. in the flue pipe after the draft control B. in the flue pipe before the draft control C. over the fire at the observation door D. under the draft hood
The abbreviation for GAUGE is ____.
A. G B. GA C. GE D. GAU