CABLE SECTION

[AYAD]

Hi,

I'would like to know how to calculate the cable section in DC Area ?

Thank you 

[Lazare Fesnien]

Dear Ayad,

The ohmic resistance of the wiring circuit induces losses ( ELoss =  Rw · I² ) between the power available from the modules and the power at the terminals of the sub-array.

The relevant parameter for the simulation is the Rw value, which is an  equivalent resistance of the wires, as "seen" from the input of the global sub-array  (i.e. the set of MPPT inputs defined in this sub-array). You should define one Rw value for each sub-array in your system.

A PVsyst tool allows you to easily calculate this information in "Detailed Losses" then "Ohmic Losses" then "Detailed Computation"

Regards,