maximum wire size for use in a 12rc and a trailblazer 275

[cruizer]

Well the machine puts out 250 Amps at 100% duty ( I'm guessing) so 045 dual shield. Probably 1/16 innershield. Or just go by whatever the manufacturer says

[ckib]

I was wondering what is the largest flux core wire I can use in the 12rc and 275 trailblazer Thank you