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Electrical Theory & Applications for HVACR
Glossary
Page 133
G
generator
a mechanical rotaƟng electric device that converts mechanical energy to Direct Current (DC) electrical
energy
Greenfield
a flexible metal conduit used in applicaƟons that require bends at various angles
ground (GRD)
n. a common point of zero potenƟal such as a motor frame or chassis
v. to connect a circuit to the earth, thus making a complete circuit
ground fault interrupter circuit (GFIC or GFI)
an electrical device that opens a circuit that has been accidentally grounded
H
hard‐start kit
a kit consisƟng of a start relay and capacitor to provide high starƟng torque
hertz (Hz)
a unit of frequency equal to one cycle per second
high‐voltage circuit
a circuit involving a potenƟal of more than 600 volts
horsepower (HP)
measure of the amount of work a motor can produce during a period of Ɵme
hot wire
a lead with a voltage difference between it and another hot wire or a neutral wire
HVACR
heaƟng, venƟlaƟng, air condiƟoning, and refrigeraƟon
I
I
2
R
formula for finding power in waƩs
ICE
an acronym used to help remember that current (I) in a capaciƟve (C) circuit leads voltage (E)
impedance
total resistance to electron flow in an AC circuit caused by resistance, inducƟve, and/or capacitance
reactance measured in Ohms, represented by the symbol Z