The welder is on it's own circuit with a dedicated wire running to the panel box. It is wired 220v while the lights will be 110v. I can't see it being the welder because I have had a welder in this shop since day one. The only thing has changed is that I now have a Tig with a High Frequency start. If I don't use the welder for the next few days the door will open, soon as I use the Tig I have to reset the breaker to open the door. I will try it again the next time I use the mig.

The welder is about 25 feet away from the door button which is hard wired into the opener. See what Everlast support comes up with after talking to Mark. I am glad it is not triggering the door to open when I use the Tig