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Electrical Theory & Applications for HVACR
Glossary
Page 143
W
waƩ
unit of true electrical power; symbol is W
WaƩ’s Law (Power law)
in a DC circuit or in a purely resisƟve AC circuit, waƩs equals volts Ɵme amps
waveform
a graphic display of voltage values over a period of Ɵme
wavelength
the distance between two corresponding points of two successive waves of a periodic waveform
wire
a conductor, bare or insulated
wire gauge
the system of wire sizing by diameter, #0000 for the largest, #40 and above for the smallest
wye connecƟon
made by joining one end of each of three windings; also called a star connecƟon
X,Y,Z
y‐axis
the verƟcal axis on a graph
zener diode
a diode that has a constant voltage drop when operated in reverse direcƟon; oŌen used as a voltage
regulator