Hi, I'm new here and I've looked at a lot of the threads a wealth of exp and knowledge. My quuestion is : I have just purchased a syncrowave 250, and every time I weld with it, the lights flicker in my shop. I have a 100 amp entrance to my shop, and I am not weiding at full amperage-50-150 amps. Also weilding alum with this machine, what's the best tungsten, my supplier told me that I should only use pure , but I have trouble on thin material melting through. Probably my inexperience, but trying to learn all I can. I have had exp. with stick and mig in the past but not tig. Really want to learn. Thanks for any tips you can give.