If you are shifting a Pro Spot i4S 22V welder from a 3-phase commercial facility to a location that has only 240V single-phase power, you are probably asking yourself how to make it function without spending a fortune on utility upgrades. 

That’s just what one of our customers faced, and here we will share with you the perfect solution that our team provided. 

Overview of the Issue 

The customer wanted to relocate their Pro Spot i4SS 22V spot welder to a building with only a 200A single-phase service at 240 volts. The welder is no small feat as it pulls a 60A 3-phase load, especially when considering the welder’s high duty cycle and likelihood of momentary current spikes due to spot welding. 

In order to handle the needs of this type of equipment, we suggested our GP30/60 Dual Zone Rotary Phase Converter. 

Why Choose the GP30/60 Dual Zone?

Most phase converters are designed for motor loads, but welders, particularly high-end spot welders, are something else. They act more like resistive or electronic loads, and that’s where most converters fail. 

The GP30/60 Dual Zone is designed specifically for these types of challenges. It offers the following benefits. 

  • Soft-starts the phase converter, not your welder, which protects your equipment and cuts inrush current

  • Handles up to 80 amps of continuous resistive or electronic load

  • Preserves voltage imbalance below 2%, essential for sensitive electronic welding controls

  • Built for high-duty-cycle use, such as multi-pulse and robotic spot welding

  • Flexible wiring, which connects directly to your welder or through a 3-phase subpanel

This configuration is a cost-effective and permanent solution to the installation of the new 3-phase utility service, which can often cost tens of thousands of dollars.

Electrical Setup at a Glance

Parameter

Value

Input Voltage

240V Single Phase

Output Voltage

240V 3-Phase (Balanced)

Welder Load

60A 3-Phase

Recommended Converter

GP30/60 Dual Zone Rotary

Input Breaker Size

100A Single Phase

Output Load Capacity

Up to 80A (Resistive/Electronic Load)

Welder Plug Type

NEMA 15-50 (verify compatibility)


Final Thoughts

If you use powerful welding equipment and single-phase power only, do not go with makeshift solutions. The GP30/60 Dual Zone Phase Converter is the tested, scalable solution to power your equipment safely and effectively, without overloading your service or causing downtime. 

Need help choosing the right converter for your welder, CNC, or compressor? At Phoenix Phase Converters, we’ve got your back. Contact us to get expert support and a fast quote.