jches
New Member
Posts: 4
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Post by jches on Oct 3, 2019 11:56:35 GMT -5
I am curious as to how LW is calculating total amperage across 3 phase 208v loads. If a Viper is drawing 5.8 amps across each of 2 legs then it appears that LW is correctly assigning 5.8 amps to each of 2 phases. However, when 60 heads are loaded onto a 60 ch rack the total amperage calcs in the dimmer detail page reads 200.91A per leg versus my calcs at 232A per leg. Is there a power factor involved in this calculation?
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Post by johnmcsoft on Oct 4, 2019 21:19:41 GMT -5
Can't tell from your .xlsm sheet where your per-leg numbers are coming from. Lightwright uses Rich Cadena's formula, which accounts for 208v, assuming the legs are perfectly balanced. It's the best calculation there is.
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jches
New Member
Posts: 4
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Post by jches on Oct 6, 2019 10:59:55 GMT -5
Thanks John! Is there a link to Rich's formula I can check out?
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Post by johnmcsoft on Oct 11, 2019 7:50:28 GMT -5
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