What Size Generator Do You Need For Welding?

When it comes to welding, having the right generator is essential to ensuring that your welder operates correctly and efficiently. Choosing the right size generator for your welding needs can be challenging, as there are many factors to consider.

Factors to Consider

There are several factors to consider when selecting a generator for welding, including:

Calculating Power Requirements

Once you have determined the factors above, you can use the following formula to calculate the power requirements for your welding generator:

Generator Wattage = Welder Amperage x Welder Voltage x 1.25

For example, if you are using a 200-amp welder with a voltage of 240V, the calculation would be:

Generator Wattage = 200A x 240V x 1.25 = 60,000W or 60kW

Generator Sizing

When selecting a generator, it is important to choose one that can handle the peak power requirements of your welder. In general, a generator should have a minimum output of 5,500 watts for stick welding, 6,500 watts for MIG welding, and 7,000 watts for TIG welding.

However, it is important to note that generators will have different maximum output capacities based on their size and fuel type. It is recommended to consult the manufacturer's specifications to ensure that the generator you select is suitable for your welding needs.

Conclusion

Choosing the right generator for welding is essential to ensuring that your welder operates correctly and efficiently. By considering factors such as welder type, welding amperage, electrode type, and duty cycle, you can calculate the power requirements for your welding generator and select a generator that meets your needs.