If you need me to measure my male end of the plug for you all you got to do is ask. It is an idea if you can't find what you need on the internet. That was 20 years ago, I did not have internet access then. I then changed out all the ground plugs to the smaller size including the male end on the lead. I needed to change some of the plugs out on my old marquette welder and could not get the right size so I ended up leaving the hot plugs original size and used one of the ground lead plug in sockets to make it complete and usable. I could probably cobble something that would work, but I'd really prefer something that is 'proper' for the job. However, I can't find any information regarding these Marquette welder lead connections anywhere by googling as to what they actually need to be. I've not measured the actual size of the plug on the welder, but it appears to be about 3/8' (and a Sharpie marker barrel fits nicely.). This welder has the multiple 'holes' for the leads for selecting amperage. My local Farm & Fleet had plugs which I thought would work, but it turns out the pin size is too small. I was given an older Marquette model 10-123 180 amp 'buzzbox' with no leads. Are/ were Marquette welders any good? Cool, mine didnt have the metal liner and I didnt have a manual either so I had to experiment and search for information. Help Remember Me? Forum FAQ Calendar Forum Actions. We had an old Marquette arc welder but I don't know anything about there mig welders.

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