Boomerweps wrote:
Problem is that it is about 90-100 feet from the home circuit breaker box. Voltage drop calculator has about a 5% voltage drop for that distance using 10awg and about 3.5% using 8awg (not allowing for the TT shore power cord).
I'm thinking I'll need to use 8awg.
Copper gets expensive, plus added components, outside jack, ditchwitch rental, etc.
Any thoughts?
I'm looking at Direct Burial wire or interior grade that would be routed through sealed plastic pipe. I've only checked Home Depot pricing so far and not the local electrical supply house.
Garage has 12awg run to it and is a good 110-120 feet run through the house and ground from the CB box.
I just installed a 30A plug for my TT about 3 weeks ago. I used 10 ga. direct burial underground wire inside 3/4" PVC conduit. Ran 50' from post to house and 50' through basement to a 30A breaker in the breaker box in garage. Voltage drop is acceptable.
I measured 121.5 at the breaker and 120.4 at the plug with no load. That's less than the 5% drop I expected.
Measured 119.9 at the trailer end with fridge running, some lights and a TV on. Kicked on the A/C with the above and it measured 113.6V which is about 8% drop under load but acceptable to me.
Total cost was about $450. All materials were bought at HD.
