#6 is good but apparantly only up to certain length of run. We put in a 50 amp RV plug 160 feet from our panel and were advised to use #4 wire. We still used the #6 Teck as I already had it and so far its worked fine. Nonetheless, the advice from various sources was to go #4.
160 foot run you will have a minimal voltage drop 119.86 volts at end of run 0.12% voltage drop no 4 THHN is good for 70 amps that is great you will never have any issues and have plenty of amperage most trailers 5th wheels wont ever need more than fifty if you were to amp each leg with everything on probably 17 amps per leg cost is a factor also wire is very expensive
#6 is good but apparantly only up to certain length of run. We put in a 50 amp RV plug 160 feet from our panel and were advised to use #4 wire. We still used the #6 Teck as I already had it and so far its worked fine. Nonetheless, the advice from various sources was to go #4.
160 foot run you will have a minimal voltage drop 119.86 volts at end of run 0.12% voltage drop no 4 THHN is good for 70 amps that is great you will never have any issues and have plenty of amperage most trailers 5th wheels wont ever need more than fifty if you were to amp each leg with everything on probably 17 amps per leg cost is a factor also wire is very expensive