glossary

An electrical current which flows in only one direction in a conductor. Direction of current is dependent upon the electrical connections to the battery or other DC power source. Terminals on all DC devices are usually marked (+) or (-). Reversing the leads will reverse the direction of current flow.

The arrangement of direct current arc welding leads in where the electrode is the negative pole and work-piece is the positive pole of the welding arc.

The arrangement of direct current arc welding leads in where the electrode is the positive pole and work-piece is the negative pole of the welding arc.

An interruption of the typical structure of a material, such as a lack of homogeneity in its mechanical, metallurgical, or physical characteristics. A discontinuity is not necessarily a defect.

The arrangement of direct current arc welding leads in which the electrode is the positive pole and the workpiece is the negative pole of the welding arc.