Why 220–240V Laser Welding Machines Work Perfectly in the United States
When purchasing and installing a laser welding machine, power compatibility is one of the most common concerns for customers in the United States. A frequent question we receive is:
“Why can a 220V laser welding machine operate normally in the U.S.? Do I need an additional transformer?”
The answer is simple: No transformer is required. As long as a standard U.S. 240V single‑phase power supply is available, the machine can operate safely and stably.
How the U.S. 240V Single‑Phase Power System Works
In the United States, residential and light‑industrial power is not supplied as a single 220V phase in the traditional sense. Instead, the system works as follows:
The utility provides two 120V hot lines
The two hot lines are 180 degrees out of phase
When combined, they produce 240V at 60Hz
This type of power supply is widely used for: Air conditioners, Electric dryers, Electric ovens, Light industrial equipment
From an electrical standpoint, U.S. 240V single‑phase power is fundamentally compatible with the international 220–240V single‑phase standard.
Why Xianming Laser Welding Machines Are Fully Compatible
Xianming Laser welding machines are designed for global use. The power system is engineered with flexibility and stability in mind, featuring:
Wide input voltage range: 220–240V
Dual‑frequency support: 50Hz / 60Hz
Full compatibility with U.S. 240V / 60Hz single‑phase power
No transformer required, reducing installation cost and complexity
Thanks to this wide‑range voltage and frequency design, the machine operates reliably in the United States as well as in other regions using 220–240V standards.
Compatibility Comparison Table
| Laser Welding Machine | U.S 240V Single-phase power supply | |
| Rated voltage range | 220V-240V | 240V |
| Working frequency | 50/60Hz | 60Hz |
| Connection type | Single-phase three-wire system (hot / neutral / ground) | Single-phase three-wire system (hot / hot / ground) |
Installation Recommendations
For safety, performance, and long‑term reliability, we recommend:
Using a dedicated 240V single‑phase circuit
Connecting via hard‑wiring or an industrial‑grade connector
Installation performed by a licensed electrician in accordance with local electrical codes (such as NEC)
Proper installation ensures stable operation and protects both personnel and equipment.
About Xianming Laser
Xianming Laser specializes in the development and manufacturing of fiber laser welding, cutting, and laser cleaning equipment. Our products are designed to support global power standards, helping customers deploy laser solutions quickly and efficiently worldwide.
