In DCEN, which polarity is connected to the electrode?

Prepare for the Sheet Metal Trade Exam. Boost your understanding with flashcards and multiple choice questions, each comes with hints and explanations. Ace the SMWIA 2nd Year exam!

Multiple Choice

In DCEN, which polarity is connected to the electrode?

Explanation:
In DCEN, the electrode side is the negative terminal. DCEN stands for Direct Current Electrodes Negative, so the electrode is connected to the negative lead of the power source. The conventional current flows from the workpiece (positive) toward the electrode (negative), which means the heat is concentrated more in the workpiece and the electrode wears less. This polarity is chosen to favor longer electrode life and specific arc/weld characteristics, hence the electrode being negative is the defining feature of this mode.

In DCEN, the electrode side is the negative terminal. DCEN stands for Direct Current Electrodes Negative, so the electrode is connected to the negative lead of the power source. The conventional current flows from the workpiece (positive) toward the electrode (negative), which means the heat is concentrated more in the workpiece and the electrode wears less. This polarity is chosen to favor longer electrode life and specific arc/weld characteristics, hence the electrode being negative is the defining feature of this mode.

Subscribe

Get the latest from Passetra

You can unsubscribe at any time. Read our privacy policy