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Originally Posted by cameraman
You didn't say what amperage you're setting on your power supply. Based on the 68" length mentioned in your other post, I'm calculating 8.6 in² of surface area, so you should be using .27 amps for 4.5 amps/ft² or .18 amps for 3 amps/ft². Is that where you're at?
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I have 68" @ .048 (according to supplier) which gave me 10.25 sq.in.. this meant that @ 4.5A/sq. ft. I set current at .32A and @ 3A/sq. ft. I ran at .20A.
I am trusting the supplier in their diameter and alloy (5183).