OM-486 Page 11
ST-189 268
The ac auxiliary power curve
shows the auxiliary power available
in amperes at the receptacles.

3-4. Auxiliary Power Curve

020 40 60 80 100 120 140 160
0
20
40
60
80
100
120
140
0
120
80
40
200
160
280
240
AC POWER AMPERES AT 120V
AC POWER AMPERES AT 240V
010 20 30 40 6050 70 80
AC POWER VOLTS
Duty cycle is the percentage of 10
minutes that unit can weld at rated
load without overheating.
Exceeding duty cycle can
damage unit and void
warranty.
100% Duty Cycle at 250 Amperes DC
ST-182 298
Continuous W elding

3-5. Duty Cycle