Connector options for wiring 8 - KD-135-SX-UPU's...

Re: Connector options for wiring 8 - KD-135-SX-UPU's...

I am not quite sure I understand... I assume you picked Vmp-Array to be ~70.8 volts (STC)? Either for a 48 volt battery bank with PWM or MPPT charge controller, or a lower voltage battery bank with MPPT type controller?

You will be using UV rated wiring, will try to have wires entering from bottom of box with drip loops? May consider drilling weep holes in lowest corner of junction box (this is standard for many outdoor/exposed electrical installations--Not really sure if this is "approved" or recommended for solar panel or not--anyone with better information?)?

With two parallel strings of panels--Assuming you do not add more parallel strings later, you do not need a combiner box with fuse/breaker per parallel string connection (usually only needed for strings with 3 or more parallel panel strings).

If you will add more panels later--do you have a plan? (if PWM, add 4x panels at a time in parallel, add combiner/fuse box--If MPPT, you could add two panels at a time to the existing string and put 5 or 6 panels in series total--depending on local temperatures and controller rating).

You have the grounding/grounding clips and 6 awg wire all lined up?

Sorry--I am not quite sure I understand your question.

-Bill

Re: Connector options for wiring 8 - KD-135-SX-UPU's...

Yes, you want the loop below the box to keep water off the box openings.

-Bill