Hi all, will I be OK using 4mm2 Helukabel for PV wiring.  One string = 5x545 Watt JASolar panels in series.  Current(max) = 13A.   V(max) = 5*43 = 215V. Maximum cable run to end of furthest string = 30m, minimum cable run to end of closest string = 20m

Voltage drop < 3%

I have 4 strings, could I lead the 8 conductors (4mm2) into one 32mm galvanized conduit?

 

Thanks for the replies

 

 

Edited May 18, 20233 yr by gimme_power

On 2023/05/18 at 10:37 AM, gimme_power said:

 

I have 4 strings, could I lead the 8 conductors (4mm2) into one 32mm galvanized conduit?

 

 

My calculation based on the capacity factor is yes. 

I have made no allowance for solar cable having a thicker insulation and also used the factor for PVC cabling.