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It's not so much the duty cycle you have to worry about but the current draw, 8 gauge wire is more than sufficient to hold the current draw of your spot welder.

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14y ago
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1mo ago

To calculate the required conductor size for a spot welder drawing 90 amps with a 40% duty cycle, you need to account for the maximum current flow during operation. 90 amps * 1.5 = 135 amps (to accommodate the intermittent nature of spot welding). You would then use a conductor size based on a 135-amp current rating to ensure safety and efficiency in the electrical system.

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Q: What is the conductor size for a spot welder draw 90 amp with a duty cycle 40 percent?
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