[ramzy2006]

Dear

For the above mentioned, the situation depend on if you have electric measuring instrument or not, if yes what you have then you can decide

In a present of jus clamp meter you can measure the current and volt

KVA =V*I

If you have just multi-meter reading ohm and volt

You can calculate the resistance of the welding machine direct=R

Then

KVA = V2/R

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