That 450 amp Hobart ( It was bought from a WWll surplus auction) would lay 1/4" rod out in a 1/2" wide bead all day, when burning big rod like that you need two five gallon pails of water beside you to drop the stinger into between rods, they get so hot you cant hold on to them. When welding new grouser bars onto the cat tracks. there were 3 men required and two separate cables from the welder. One guy on one side would weld a rod and dunk his stinger while the guy on the other side welded one pass...the third guy was to keep hauling gas to the welder, when welding big rod it run on the governor all day.
It would take 3 full days to install new grousers on one cat, one "stick pass" on one side with 1/8 rod (7018) then a "filler [pass on both sides of the pad with 1/4" rod.
The other thing about burning big rod was that every bit of skin facing the flash needed to be covered...."weld burn" can be more severe than any sunburn you can imagine.