... .com, welding current doesn't vary with arc length,we supply many kind of Welding machine, Such as MMA Welding machine, battery charger, welding machine, cut TIG welding machine, MIG ... )15.718.327.3Rated output(A/V)250A/30V315A/32.6V400A/36VOutput current range(A)30-25030-31530-400No-load voltage(V ...