What is the open circuit voltage range for arc welding?

The open circuit voltage (OCV) range for arc welding typically falls between 20 to 100 volts. This is the voltage present when the welding machine is on, but the electrode is not in contact with the workpiece. This range is essential for establishing an arc and maintaining stable welding conditions.

A lower voltage could lead to difficulty in starting and maintaining the arc, while a higher voltage, beyond this range, might not be practical for typical arc welding processes and can pose increased risks of electrical hazards. The 20 to 100 volts range is effective for various arc welding techniques, including Shielded Metal Arc Welding (SMAW) and Gas Metal Arc Welding (GMAW). Understanding this voltage range is crucial for ensuring safe and effective welding operations, as well as for preventing equipment damage and ensuring the quality of the weld.