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HVAC

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Across
2.the measurement of electrical flow
5.where molecular motion stops is called ____________ zero
8.safety device that automatically opens an electrical circuit if circuit overheats(overloaded)
10.ball pein ___________
12.gas used for soldering pipe that burns at approximately 1500*
13.the absolute Celsius scale where absolute zero measures "0" degrees
15.wire is typically made of this substance
17.rubber & plastics are used for this on wires
18.prevents oxidation when soldering
19.a saw used for cutting metal
21.EMF
22.switches are wired this way to control loads
23.resistance in an electricalcircuit
Down
1.mixture of propane and acetylene gases used for soldering or brazing
3.motors are always wired this way
4.a six-point socket that resembles a screwdriver
6.safety device in an electrical circuitconsisting of a strip of fusible metal which melts, opening the circuit, when the circuit is overloaded
7.batteries produce __________ current
8.excess material squeezed into the end of tubing after tubing has been cut and should be reamed & removed
9.a device, typically installed on a wall,used to control the temperature of a room for heating & air conditioning systems
11.the absolute Fahrenheit scale where absolute zero measures "0" degrees
14.gas used for soldering pipe that burns at approximately 400*
15.the absence of heat
16.unit of measurement for power in an electrical cicuit
20.linesman ____________

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