- Aug 4, 2015
OK, So I am looking at the wiring and design on this. And while I hate to pick apart things, I really hate things getting smoked and giving people issues. So, I see how you are wiring up your run capacitors with independent switches. Might be a good idea, but Im not seeing individual wires running back to a high current buss connection. What wire are you shipping the high current back from? Each cap seems to have 12 gauge wire on it, but do they go to a number 6 or something that runs to the motor lugs or is it run on 12 gauge? The running current in each cap with 12 gauge wire will be fine. But the caps as a whole will have alot of current flow. Something to think about. Might also look at the switches. for the smaller caps, a 5 amp switch would be ok, but bigger caps bigger currents. Switches may be rated in HP and not amps. Once your switches are set, make sure that you are not going to exceed the current rating of the switches. Only reason I bring this up is I have seen home built and factory built RPC's that had all the caps jumpered together with 12 gauge wire, and then a single 12 gauge wire running over to the motor. On a 1 or 2 HP converter, it's fine. On a 10 or bigger HP RPC, 12 gauge ain't gonna cut it and what typically happens is all the current, remember that EVERY amp of current in the created leg WILL flow across the run capacitors, overheats the 1/4 blade connector, and it gets weak, starts arcing, gets hotter and finally burns off the wire. If you have already thought of this, then disregard all this.... if not, it might be something to consider.