Very odd.
You are getting a shock through gloved hands and your feet to earth. The only circuit that connects to earth on one side is the AC mains. As Robert Weaver said, both the positive and the negative DC outputs from the welder are fully floating, in all modes, with no connection to the chassis or the AC mains earth of the machine or the work environment. The DC side is the rectified output of a double-wound high frequency transformer, which provides complete isolation.
The AC mains should only be getting as far as the bridge rectifier at the input of the inverter. There may be some leakage from a mains filter, or a power factor correction circuit. I would suggest checking that there is a sound AC mains earth connection to the welder chassis.
The open circuit voltage ( OCV ) of inverter MIGs and MMA ( Arc ) welders is often 60 to 70 volts. As soon as an arc is struck the MIG will reduce to 15 to 35 volts. It also may not be pure DC, looking more like a pulse-width modulated supply.Mine is the exact same , Model may be 200 but apart from that yes
I get a little shock if I'm holding onto neg clamp and positive sometimes on mine aswell as a little spark on the mig gun
Ah makes sense thanks , Did not know it kept a OCV around 70v and then went down thought it would be a constant at what its set on the machine.The open circuit voltage ( OCV ) of inverter MIGs and MMA ( Arc ) welders is often 60 to 70 volts. As soon as an arc is struck the MIG will reduce to 15 to 35 volts. It also may not be pure DC, looking more like a pulse-width modulated supply.
At that OCV, you would certainly feel it, but you would need to grab both output leads, either one alone plus your grounded feet should not allow any current flow.
If you measure the AC volts between output and earth you will get something like 120V. Which sounds alarming, but it's the current available that decides whether it's dangerous or not.@Red'n'Black I know what you mean regarding the buzz, I have noticed that before.
I have previously had a shock that tripped the RCD. I stupidly made up an adaptor cable consisting of two male 3 pin plugs so I didnt have to drag the extension lead reel around with the lawnmower. Big mistake. I forgot to plug the extension lead in last so the live pins were exposed which of course I grabbed with my bare hand. I quickly ordered a dedicated extension lead for the mower after that. Now, that was 240V 50Hz, the shock from the welder felt just like that. So, how can the DC side of a MIG welder possibly deliver a shock with sufficient voltage to penetrate a thick glove, albeit leather?
I can check a few things with my DVM tomorrow.
One would have thought that the welder earth clamp would be tied down to earth. Possibly your earth connection is faulty somewhere and the welder -ve lead is wandering.