You have a major voltage drop problem my friend! Can you get at least a 10 gauge cord in there. That would help the motor alot. It is straining to due what it is suppose to do. Let me know if that helps.
I had the same symptoms with a 2HP pump. Turned out the start capacitor had exploded; easy fix. Also, if you can configure the pump to run on 230VAC, do so. Not clear from your description what's going on.
Wish I could edit a response. If you're truly paralleling 2 #12 wires, the voltage drop at full load (12A at 230V for a 2HP pump) will only be about 5 volts; not serious.Wish I could edit a response. If you're truly paralleling 2 #12 wires, the voltage drop at full load (12A at 230V for a 2HP pump) will only be about 5 volts; not serious.
Answers & Comments
You have a major voltage drop problem my friend! Can you get at least a 10 gauge cord in there. That would help the motor alot. It is straining to due what it is suppose to do. Let me know if that helps.
I had the same symptoms with a 2HP pump. Turned out the start capacitor had exploded; easy fix. Also, if you can configure the pump to run on 230VAC, do so. Not clear from your description what's going on.
Wish I could edit a response. If you're truly paralleling 2 #12 wires, the voltage drop at full load (12A at 230V for a 2HP pump) will only be about 5 volts; not serious.