I have a Caddy Welding Machine ( Invertec® V155-S) with a 120V 15 Amp plug and extra 120V 20 Amp plug as spare, I wish to know how possible it could be plug with 240V 25 Amp as our power system available?

I have a Caddy Welding Machine ( Invertec® V155-S) with a 120V 15 Amp plug and extra 120V 20 Amp plug as spare, I wish to know how possible it could be plug with 240V 25 Amp as our power system available?

You are not seriously suggesting you connect a 120V load to a 240V system. You need a transformer

If u don't have a 120v line available, have an electrician wire one for u. Working with electric is dangerous and could kill u. With your question used as a stepping point, you don't have enough knowledge to do this job.

If u have the owners manual, read it before doing anything.

Good luck and be safe

Chuck

Not sure what you are asking but as wired you cannot use the welder. Step down transformer would be needed.