Response to I have a 1H.P. pentare pump, WFE-4 on a 220 breaker.Three wires running to the pump,2 black and a ground.Do I attach only one wire to L1 on the back of the pump or one to L1 and L2 plus grounding of course. My pump runs at 100 GPM, to much for a 24 inch dia. sand filter isn't it or not.I think the filter has a G.m.p. of 48 gallons.Thanks Tom

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