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HVAC BOOK UNIT 5-c

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Across
4
A humidity analyzer that uses two thermometers with the bulb of one thermometer kept moist (wet bulb) and the other bulb kept dry (dry bulb).
5
An anodized aluminum strip with a porous aluminum oxide layer used as a dielectric.
6
An instrument that is plugged into a standard receptacle to determine when the receptacle is properly wired and energized.
7
An instrument used to measure ground resistance for grounding rod installations.
8
A device used to determine phase sequence and open phases.
10
A leak detector that uses a UV light to detect fluorescent dye that is added to a system.
11
An instrument that is plugged into a standard receptacle to determine when the receptacle is properly wired and energized.
12
A material that changes its physical size or electrical characteristics as the humidity changes.
14
A thermal expansion thermometer consisting of a sealed, narrow-bore glass tube with a bulb at the bottom filled with a liquid.
15
An anodized aluminum strip with a porous aluminum oxide layer used as a dielectric.
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An instrument that tests for a complete path for current to flow.
Down
1
A mechanical pressure gauge that has a small, single-acting spring return cylinder that acts as a pressure-sensing element.
2
The connection of all exposed non-current-carrying metal parts to the earth.
3
An instrument used to measure ground resistance for grounding rod installations.
4
A device used to determine phase sequence and open phases.
9
The connection of all exposed non-current-carrying metal parts to the earth.
13
The connection of all exposed non-current-carrying metal parts to the earth.