I have a Razorweld 45 CNC plasma cutter. I have researched on the forum and have seen 30A all the way up to 60A (double Pole). The wiring I have seen is 6/2, 8/2 and 10/2.
Just looking for a straight answer, Thanks in advance
Welcome to the forum.
Some of this will all depend on were you live and the codes in your area.
The Razorweld has a 6-50P on it because that is the standard plug for most plasma cutters and welders. Now if you don’t have a 6-50R and do not plan on a welder then you can do a few different things to get the power you need for the plasma cutter. The Razorweld really only needs a 30 amp 240 volt input, This can be done using 30 amp 240 volt breaker and #10 gauge wire to a 30 amp 240 volt receptacle. You can make a pig tail from the 6-50R to a 30 amp plug or you can install a 6-50R so the Razorweld can plug in directly. If you run the 10 gauge wire to the 6-50R I would mark the receptacle 30 amp only so someone does not plug something in like a welder. Normally the most that would happen is when they tried to weld it would just kick out the breaker, but it would be safer to label it.
To be with in code in most places you would run number 6 wire from a 50 amp 240 breaker to a 6-50R. I would only run it as far as needed to save on cost and use a short extension cord made just for the plasma cutter.
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Hi Eric. I’m pretty new to CNC plasma, but I’ve been doing electronics and electrical for 50 years. I agree with George - do yourself a future favor and run 6 ga copper wire with a 50 amp breaker. Whether you upgrade your plasma cutter or plug in a welder later, you won’t have to worry about having enough capacity for your machine. Phil
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Thank you for the response. This answers my question!
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