Install and Set Up the Plasma Power Supply
34 811470 Operator Manual Powermax45 SYNC
Decrease output current and arc stretch for lower rated electrical service
If you operate the plasma power supply on an electrical service that is rated lower than what is
recommended in Voltage configurations on page 31, you may need to:
Decrease the cutting current (amperage setting). Refer to Adjust the operating settings
manually on page 57.
Decrease plasma arc stretch. The more you stretch the plasma arc, the more current the
system pulls and the more likely you are to overheat the system or trip the circuit breaker.
Example: If you use a 1-phase system with an input voltage of 230 V on a 20 A breaker, the
recommended output current is 19 A.
Input voltage 230 V
Input current at rated output (19 A x 155 V = 2.9 kW) 18 A
Input current during arc stretch 19 A
Voltage tolerance +20% to -15%
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