running wire to a pool motor, it is 1.5 hp, they pulled 10 guage wire and the breaker keeps tripping , do I need heavier wire?
Depending on the distance, heavier wire might help. It's possible that there is too much voltage drop in the wire during motor starting. That would lead to heavy startup currents being drawn for longer periods. The pump manufacturer should have wire size / distance recommendations. Voltage and current measurements at the pump during startup with min/max peak holding meters should reveal the problem. Don
