In SMAW, what is the polarity of the electrode holder when using reverse polarity?

In Shielded Metal Arc Welding (SMAW), when using reverse polarity, the electrode holder is connected to the positive terminal of the welding power supply while the workpiece is connected to the negative terminal. This setup allows for a greater amount of heat to be generated at the electrode, which is essential for melting the electrode and forming a weld pool effectively.

The positive polarity enhances penetration and is often used with certain types of electrodes, particularly low hydrogen electrodes, which can benefit from this heat transfer. By understanding the role of polarity in welding, welders can optimize their technique for different metals and thicknesses, leading to stronger and more effective welds.