Regarding the DC disco issue, we have identified the 3-pole, 600Vdc rated,
200A Crouse-Hinds CH364R (
http://www.crouse-hinds.com/crousehinds/newproducts/relatedinfo/Solar%20Combiner%20Brochure%20110309.pdf)
as a replacement for the Square D version. Its a little pricey but it looks
like the best
Kirpal and Wrenches,
Can you describe your battery setup with the four Sunny Islands? SMA
recommends using two parallel 1/0 conductors to each SI DC disconnect, for
three reasons: wire fill limitations with the 1.5" knockouts they provide,
ease of landing in the breaker, and because the 125A break
Davethis is exactly what the sunny island is capable of.supply the
house panel from the sunny island output, and the main panel in the barn to
the input side, the house panel will run full time via the sunny islands,
install a MANUAL transfer switch for times when the sunny islands may need
Hi Dave,
Depending on the house loads, you might very well do without an additional (very
expensive) auto transfer switch. The inverters, of course, already have one.
Just leave the Sunny Islands connected 24/7. The transfer from grid to battery
is then milliseconds and flawless. The 56 amps cont
We have a new (for us) application for grid connected net-metered PV with
battery back-up as follows. The twist is that the entire load center in the
house will be the "protected loads panel".
- 5kW PV ground mount located 250 feet East of their barn.
- Will utilize AC Coupled
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