parallel ASC shunt controllers

Looking at a spec. sheet for an ASC 12 amp version, its wriiten that "The ASC can be wired in parallel to sub arrays."

First page, paragraph header - "FOR LARGER ARRAYS"

http://www.powerupco.com/controllers/sci/ASC_SPEC_SHEET.pdf

your question is a good one and  highlights why dc load centers are important.  when the combiner is by the array outside(combining) then there is the need for an enclosure that can provide the appropriate busbars to handle pv disconnects, charge controller disconnects, inverter disconnects, equipment grounding conductor, load circuit breakers, etc that is located inside. 

yes bus bars would be the way to go, but not bus bars randomly hanging out readily accessible in a live electrical condition.

depending on the case, sometimes one larger controller makes sense, other times the arrays dictate that two controllers would be a better solution.  as long as the controllers are wired in parallel, there should be no problem with their functionality.

james
altE staff