How plasma amp sizing works
Clean cut vs severance, class ladder, and safety.
Handheld plasma amp sizing
Plasma cutter size by metal thickness
Enter mild-steel clean-cut thickness (in). Get the smallest 40 / 50 / 65 A class — or NO_MATCH. Size to routine clean cuts @ 220 V claims; PPE; verify air and consumables.
Handheld plasma amp sizing
Result
Match the smallest class whose published clean-cut thickness covers your job. Classes: 40 A (≤0.47 in) · 50 A (≤1/2 in @ 220 V) · 65 A (≤5/8 in @ 220 V). Above 5/8 in → NO_MATCH. Mild steel planning screen; not a pierce chart or WPS.
From measurement to decision
Open the full calculator
Same tool with room for examples.
40 vs 50 vs 65 A classes
When each class fits — and when none do.
No resources match. Try another term.