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Old 07-22-2019, 12:33 AM   #11
DDW
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City: San Francisco
Join Date: Apr 2018
Posts: 3,093
A breaker will only trip when the load exceeds the breaker rating. With a higher resistance fault, fire is easy to make. You can arc weld without tripping the breaker, as long as the arc doesn't draw more than 15A or whatever.
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