PV wiring in conduit question

verdigo
verdigo Solar Expert Posts: 428 ✭✭
in Solar Beginners Corner #1
I am wiring up my last 4 panels to my combiner < 50' away. These amount to two strings of two panels each. I half way remember reading that each string should be isolated within its own conduit or would it be okay to combine both strings within one run of conduit? 

Thanks 

Dennis
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  • vtmaps
    vtmaps Solar Expert Posts: 3,741 ✭✭✭✭
    #2
    verdigo wrote: »
    I am wiring up my last 4 panels to my combiner < 50' away. These amount to two strings of two panels each. I half way remember reading that each string should be isolated within its own conduit or would it be okay to combine both strings within one run of conduit? 

    They can share the conduit. Why don't you combine them before the conduit? You will need some sort of junction box in order to get from the PV wire to the THHN wire in the conduit... that junction box might as well be a combiner. Also, a combiner at the solar panels is a good place to put a lightning arrester.

    --vtMaps
    4 X 235watt Samsung, Midnite ePanel, Outback VFX3524 FM60 & mate, 4 Interstate L16, trimetric, Honda eu2000i
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