I have a 150 amp 30 circuit panel in this house.I am going to run a 100 amp feeder from the 150 amp panel to a pole barn 50 feet from the house.My question is.I want 100 amp wire from the house to the pole barn.Table 310.16 says 75degree wire would be a #3 from the table.Can I use table 310.15(B)(6)says I can use #4 wire for 100 amps.Would you use #3 or #4 for this prodject?