Overcurrent Device Ratings for Welders

Each resistance welder shall have an overcurrent device rated or set at not more than _____% of the rated primary current of the welder.

a) 80
b) 100
c) 125
d) 300

See answer and applicable Code reference

The correct answer is: d) 300

Article 630 covers apparatus for electric arc welding, resistance welding, plasma cutting, and other similar welding and cutting process equipment that is connected to an electrical supply system. As not

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