Forum Discussion
mvas
May 06, 2017Explorer
pianotuna wrote:
I don't understand why a "motor" load of 951 watts would cause load support to become active, while the water heater plus fridge totaling 1525 watts did not. Could this be a power factor issue?
You stated, "... 951 Watts for the motor ..."
Is that the Running Watts or the Starting Watts ?
The Starting Watts for a motor, can be 2X, 3X, 4X the Running Watts
2 x 951 Running Watts = 1,902 Starting Watts
3 x 951 Running Watts = 2,853 Starting Watts
4 x 951 Running Watts = 3,804 Starting Watts
Power Factor is usually a smaller issue,
while the In-Rush Starting Watts is the larger issue here.
A Soft-Start Controller can reduce the In-Rush Starting Watts.
A Capacitor, properly connected to the motor, can correct the PF.
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