What minimum circuit breaker or fuse size is required for the Millermatic 350P on a 230V single-phase circuit?

For 230V single-phase input, a maximum recommended time-delay fuse or circuit breaker rating of 70 amperes is specified, with a normal operating fuse rating of 90 amperes. The minimum input conductor size is 8 AWG, with a maximum recommended conductor length of 86 feet (26 meters). A minimum grounding conductor size of 8 AWG is also required. (Page 17)