The welding current required to make a resistance weld must be at a very high voltage but low amperage.

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The welding current required for resistance welding is high amperage but low voltage. Resistance welding involves passing a high current through the materials being welded, causing them to heat up and create a weld. Voltage is typically kept low to prevent arcing and damage to the materials being welded.

The Welding Current Required to Make a Resistance Weld Must