If you run the pump 1/2 speed for 7 hours versus full speed for 3.5 hours, which way uses more energy?
I believe in a DC system they would both use the same power (ohm's law P=IV; P:power,I:current, V:voltage). The voltage is fixed at 12. I'm assuming half speed would use 1/2 the current but there may be more losses one way or the other. Anybody confirm this?
