June 14, 20197 yr Hi All. Riaan here. New here. Been snooping around here a bit especially for some Axpert information so thanks for all the info and opinions available. We live on a small farm in the NC. Busy upgrading my current Solar system existing of a 3kVA axpert that was mainly used for Lights, TV, Laptop and Cellphone charging as well as a CCTV system. The rest, geysers, fridge, freezer and stove was all lpg but I'm looking to replace the fridge and freezer starting for now with 1 A++ combination fridge freezer. I've a 5kVA Axpert PWM that I plan on connecting 8 X 330W JA Solar panels to, connected as 4 strings of 2 series connected panels. Looking at their installation manual they suggest? blocking diodes as well as Over-current protection when connecting strings of serially connected panels. Is this necessary and if so can someone suggest Over-current protection devices? Regards, Riaan.
June 14, 20197 yr 1 hour ago, Riaan_v100 said: Is this necessary and if so can someone suggest Over-current protection devices? From quite in dept discussions on this topic in the past, fuses is needed when you have more than 2 strings. In your case with 4 strings it would be better to install fuses for each string. 10 amps should work just fine. I usually install a 1000VDC double pole fuse holder per string with a fuse on the + as well as the - of each string. Let me know if I can assist in sourcing the components for you.
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