[one+g]

Hey, I weld for Csx railroad and we Use Lincoln welders. Its all I have experience with but as an example they will be running for 4-7 hours a day minimum. Its a 600 amp unit. Much bigger than you will ever need. The unit we have now has been in heavy use for two years and has only had oil changes and gen service done to it. We had a 400 amp gas unit that ran and worked fine day in and day out for 9 yrs heavy use. The only one I had that broke needed a 150 dollar part. I dont have experience with the small units but I do agree with the buy as big as you can afford. The unit runs way better and last longer if it doesnt have to run at maximum output. Also if you go to get rid of it they will always bring a good price.