#8 THHN/THWN-2 is rated at 55 amps. When connecting to a 75 degree breaker, is it then rated for 50 amps? Also, I can not find a temp. rating on the recepticale that this is connecting to. It will be a hubbell # CS8269, 50 amp, 250v twistlock. Should I forget trying to use #8 and use #6?