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Typical 3-Phase Wiring Diagrams and Equations for Resistive Heaters

Definitions

For Both Wye and Delta (Balanced Loads) Wye and Delta Equivalent
VP= Phase Voltage
VL= Line Voltage
IP= Phase Current
IL= Line Current
R = R1 = R2 = R3 = Resistance of each branch
W = Wattage

 

WDELTA= 3 WWYE
WODELTA= ¾ WDELTA
WOWYE= ½ WWYE

Equations

3-Phase Wye (Balanced Load) 3-Phase Open Wye (No Neutral)

3-phase wye balanced load

3 phase open wye diagram

3-Phase Delta (Balanced Load) 3-Phase Open Delta

3 phase delta balanced load diagram

3 phase open delta diagram