What is the most important operating characteristic to check whenever working on a water-cooled system?

What will be an ideal response?


The water flow.

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Depending upon the application, wire sizes are permitted to be as small as ____________________ AWG copper.

Fill in the blank(s) with the appropriate word(s).

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Which of the following square junction boxes must be used if there is one 6" conduit and two 4" conduits entering on one side of the box and exiting at a 90° angle on another side of the box? (Assume the conductor size is No. 4 AWG or larger, but operating at less than 1,000V.)

a. 24" b. 30" c. 36" d. 44"

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What is the temperature swing of an air sensing commercial refrigeration thermostat?

a. 2° b. 5° c. 10° d. 20°

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Whenever a thermal limit or fusible link needs replacing, the technician should always check:

A) The thermostat calibration. B) The transformer control voltage. C) The power wire for voltage drop. D) The air filter and airflow.

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