This evening as the sun was going down I added the 5 panels that we purchased a few months ago when they went on sale for < $1.00 / watt. Rather than run new cabling from the roof to the combiner box I've added the standard combiner cables and have joined the two runs of 5 panels together at the roof. So the system is 4 runs of 5 panels with two being joined on the roof and those being routed to a combiner box on the board. There is room on the roof for one more row of 10 of these panels if we go that route.
Our PV Array is now 2kW (20x100W panels).
The next improvement will be moving from our 12 volt inverter to a 48 volt inverter. I am currently thinking of the Schneider SW4840 as our next inverter.
Once the panels see the sun I'll add more information.
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