Does DCEP require a larger diameter electrode when GTAW?

Yes, Direct Current Electrode Positive (DCEP) in Gas Tungsten Arc Welding (GTAW) typically requires a larger diameter electrode compared to Direct Current Electrode Negative (DCEN). This is because DCEP results in a higher heat concentration at the workpiece, which can lead to faster melting of the tungsten electrode. A larger diameter electrode helps maintain its integrity and provides better heat dissipation, ensuring stable arc performance and minimizing electrode wear.