Now I'm at a loss. I switched out the new old wire with class M 2awg welding wire and still have the same weak arc. I should mention I used the welder just prior to rewiring and worked fine. I enclosed photo of butt connectors used they are aluminum.

I have been playing building with Type 1A GP and HC Series Containers for some time I have reached out a few time to this company for answers as well as design help.
http://www.containerhome.info/

I knew I messed up upon returning home and feeling wire for first time, I had mentioned to Lowes associate that the wire would be used for welding but after wiring it up it would have been like trying to weld with an elephants trunk. I ordered 2awg welding cable class M this morning. Thank you for r...

I've been using my cheap 110a 230v stick for 10 years now its a harbor freight unit but now the insulation has started peeling so time to replace wires. Power was replaced by same spec. wire as new torch and ground was upgraded a bit to 600v AWG2, lowes did not carry original gauge wire. Rewire was ...