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Old 10-06-2003, 06:53 PM
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It is common NEC (National Electrical Code) practice to protect #10 AWG wire with a 30 amp fuse or breaker, #12 is 20 amp, #14 is 15 amp. These figures can vary slightly depending on the wire type and installation., but as a general rule these figures are good

It is also standard engineering practice to size wire at 125% of full load. At 19.5 amps with 4/C #10, you are way under the max load....start welding.

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