I'm currently working on a project to determine the transmission losses in an LVAC line, as part of an off-grid distributed generation system.
The manufacturer of the cable has given me a DC resistance per km value. I'm looking for more accurate values, so I tried to figure out the AC resistance using skin depth, but the value falls below than the DC resistance specified by the manufacturer.
Is there any correction factor for converting DC to AC resistance of the cable?
In a Quora post, I saw someone mentioning a correction factor of 1.6 but I couldn't find any credible references to back it up.
Some help would be appreciated.
P.S: The DC resistance at 20° Celcius of the 95 X 3+ 70 sq. mm cable given by the manufacturer is 0.320 ohm/km. Based on my calculations I'm getting 0.279 ohm/km.