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Ohomic Loss

Rajesh saha

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I am calculating DC and AC Cable Power loss at 90 Deg C for fixed length and Conductor type as per NOCT. 

But When I am putting this Same power Loss in PV syst then it is not  as per STC. So, My question is that while putting power loss should I consider 25 Deg C Because PV askes Power loss at STC. Please clarify the point.





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If you have cable length and conductor type, the best is to use that information directly. PVsyst will then compute the resistance of your cabling.

STC is 1000W/m^2 and 25 °C so yes you have to take that into account if you want to enter a percentage loss value. I would rather recommend using the cable length, section, and conductor type instead.

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