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What size generator or power station for a MIG welder? (6,250+ W)
To run a MIG welder, choose at least
6,250 W running.
6,250 W running.
A MIG welder draws about 5,000 W while running. Pick a generator, inverter or power station rated comfortably above these numbers.
Battery runtime calculator
Estimated runtime—
Assumes about 85% usable capacity. Motors need extra headroom for startup surge.
How long a power station lasts
| Power station | Estimated runtime |
|---|---|
| 300 Wh | 0 h 3 min |
| 500 Wh | 0 h 5 min |
| 1,000 Wh | 0 h 10 min |
| 2,000 Wh | 0 h 20 min |
| 3,000 Wh | 0 h 31 min |
Sizing guide
| Minimum running watts | 6,250 W |
| Minimum starting watts | 6,250 W |
| Suggested inverter | 6,300 W or higher |
See also MIG welder wattage and running cost.
FAQ
How many watts does a MIG welder use?
From about 3000 watts for hobby units to 10,000+ for heavy-duty welders.
What generator runs a welder?
You need a large generator matched to the welder's amperage and duty cycle.
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