Jason, I think they were re-branded Eaton inverters. Unlike the modules,
they were actually UL listed...
On 2014/6/30, 16:13, Jason Szumlanski wrote:
Does anyone know who manufactured the PV250 inverters from ASP before
they went under? Are they private labeled inverters manufactured by
others
Does anyone know who manufactured the PV250 inverters from ASP before they
went under? Are they private labeled inverters manufactured by others, or
is ASP considered the OEM? I was able to find a manual online at least.
Any experience out there with faults in these inverters? I have a feeling
our
What am I missing here?
In the 2014 NEC, 705.21 seems to indicate that every inverter needs to have its
own AC disconnect. Most inverters only have integrated DC disconnects (SMA,
Power One, Fronius) as I recall. Or has this been interpreted to only apply to
the DC side of the system?
Since
Bill,
I would be happy to contribute.
Regarding the 120% rule, I'm not sure I agree. There can be panelboards
connected in series in a supply side connection, and there can be loads in
PV inverter aggregation panels used in supply-side connections. For
example, it is common to install a dedicate
Corey:
I think what you are proposing is a bad idea and false economy.
It is good practice to provide disconnecting and over-current protection
devices to all discrete components in any system. This applies to power systems
as well as signaling systems. This provides capability to isolate sub-
You are not dealing with current limited devices, you are dealing with the
grid which is infinite. This is why you put the OCPD at the grid end of the
wiring, not the inverter end.
On Mon, Jun 30, 2014 at 2:38 PM, Corey Shalanski <
cshalan...@joule-energy.com> wrote:
> Thank you to all who respo
Corey,
The wire ampacity has to be sized for the OCPD, as this is potentially a
bidirectional wire in a fault. While the inverter is current limited, the
grid it’s connected to is only limited by the Service Main, and that 50A
OCPD, which would exceed the ampacity of #10 wire.
Brian Teitelbau
Thank you to all who responded to this thread - particularly Jason/Dave/Jay
for pointing out the maximum OCPD requirements.
Getting back to my original question.. I would like to use Dave's
"extremely small subset" example of two SB5s operating at 277V. In this
case, if we were to parallel the out
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