PV Powered inverter queries [RE-wrenches]

[Marco Mangelsdorf]

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I was checking out a fellow Wrench's installation of one of them thar new
fangled 2.8 kW PV Powered inverters from our friends in Oregon.  This
particular installation had two series strings of Sharp 175s, nine in a
series.  From quickly perusing the sparse installation manual, I couldn't
tell whether each series string needed its own overcurrent protection or
whether it's OK to parallel the two series strings and come down to the DC
disco with one set of + and - conductors.  Anyone know whether this inverter
has any potential to backfeed from the AC side to the DC side?  And can one
pull a Sunny Boy with this inverter in terms of not necessarily needing each
series string to be overcurrent-protected when there are only two series
strings?

aloha,
marco

Marco Mangelsdorf
President
ProVision Technologies, Inc.
69 Railroad Avenue, A-7
Hilo, Hawai'i 96720
(808) 969-3281, 934-7462 facsimile
www.provisiontechnologies.com

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