Duty Cycle And Overheating; Ac Auxiliary Power - Miller Electric Big 40G Owner's Manual

3-4. Duty Cycle And Overheating

60% Duty Cycle At 350 Amperes
6 Minutes Welding

3-5. AC Auxiliary Power

4 Minutes Resting
100% Duty Cycle At 300 Amperes
Continuous Welding
Duty Cycle is percentage of 10 min-
utes that unit can weld at rated load
without overheating.
Y Exceeding duty cycle can
damage unit and void
warranty.
rduty1 5/95 – SB-111 076-A
The ac power curve shows the aux-
iliary power in amperes available at
the 120 and 240 volt receptacles.
rsb3.1 2/92 – ST-109 365-C
OM-477 Page 11