Post #9193

Today I helped the same guy as yesterday... we pulled two 1AWG, two 2AWG, two 6AWG from his meter base on the house out 125' to the shipping container that will have the inverters and batteries. What a booger. We eneded up pulling the straight section 100' under ground and then feeding it thru individual 45's and 90's in teh conduit to get to the wall connection on the shipping container. No way we could have pulled end to end thru all those bends. He's using two 10,000kva victron inverters, so that's 10kw of reactive power, but only 8kw per inverter of "real" power. So his maximum current will be 83amps @ 240v. We're using aluminum wire because it's so much cheaper. Since the standard length used in electrical code is for 100' runs and we are at 125' I had to do a separate voltage drop calculation. We were right on the hairy edge for 2AWG so I opted for 1AWG for the L1 and L2 wires (ie the two hots) and 2AWG for the neutral and ground. The two 6AWG wires are for a 50amp feeder to the inverters for emergency charging of the batteries on cloudy day. Here's a voltage drop calculator for wire runs longer than 100'. https://www.southwire.com/calculator-vdrop