Best way to wire pannels

Posted by Alex Bruni on May 28, 2008, 04:28:26 PM

Best way to wire pannels
I have 4 BP 3115 panels to use on a 24 volt inverter would it be better to wire 2 in series and then parallel them so that I have only one set of wires going to the combiner box or should I wire them in 2 separate series circuits?
 If I wire them up in parallel what size breaker should I use? the paper work gives an Isc of 7.5
 

Posted by James Cormican on May 28, 2008, 04:39:58 PM

Re: Best way to wire pannels (Reply #1)
two separate series circuits going to the combiner box, that should be right next to the modules.  that is the point of the combiner, to combine series strings in parallel and LEAVE with one set of positive, negative and ground, not enter.

so, two 15a din rail circuit breakers in a box like this will work. 

http://store.altenergystore.com/Enclosures-Electrical-and-Safety/Electrical-Enclosures/Combiner-Boxes/Midnite-Solar-MNPV6-Combiner-Box/p4566/

cheers,


james
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