I wondered the same thing. If a person fed the secondary side of a
transformer, and the primary side was fed from a service with GFP, would it
mater if the GFP was able to be backfed?
Hope the question makes sense!
Jesse
Sent from my iPhone
On Mar 25, 2011, at 1:13 PM, "Glenn Burt" wrote:
We've explored this strategy many times due to all of the whole house
and critical load generators in Florida. We've stayed away from the
contactor solution because of the potential for the NC contactor failing
to open, keeping the inverters "online" when transferred to generator
power. While unlik
Mark,
I agree it is best to wire the inverters on the utility side of the
transfer switch. When that isn't easy, a normally closed contactor that
is opened by generator voltage, will isolate the inverters from the
generator and allow automatic return to utility operation when the
generator is
Eric,
I do not have direct experience with this but have been exploring the issue
for a project I am currently doing.
My response will be to take the trouble to interconnect the Enphase
inverters on the line side of the tranfer switch so that the inverters can
never be connected to the generato
Evening all,
A quick note on DOD.
Batteries / cells are often rated at voltages above and below 1.75VPC (1.7 -
1.85 are "common"), so ratings should be verified with the supplier / model.
However, as anyone that has ever run a discharge test knows, the time /
available AH from 1.8 to 1.7VP
Boy.. Seems I recall someone telling me this is bad... good way to take out your Genny's control board.. never tried it..Dan BrownFoxfire Energy Corp.Renewable Energy Systems(802)-483-2564www.Foxfire-Energy.comNABCEP #092907-44
Original Message
Subject: [RE-wrenches] Generator a
I have a customer with a "30A Mechanically Interlocked Breaker" for their
generator feed at the main panel. My question is: If the home power is
transferred from utility to generator power, will the backfed PV see the
generator as grid power and sync up and produce? This is a nice Honda
Generator s
Kent and list,
And I was half awake this morning and realized my error in yesterday's post to which you responded... I said
"A battery is considered empty at 10.75V (12V), or 1.79 VPC."
No, it's at 10.5V, or 1.75 VPC, as you have correctly stated. Sorry.
Allan
On 3/26/2011 9:32 AM, Dan Fink wrote:
Mark;
An example:
http://tinyurl.com/4p4367b
and a whole home package! Even includes a Kill-Watt for all your
energy production monitoring needs:
http://tinyurl.com/4qgogt9
And for an added bonus if you read now, one for a direct grid tie wind
turbin
Who are these distributers in MN? I would like contact them.
Jesse
Sent from my iPhone
On Mar 26, 2011, at 11:07 AM, Dan Fink wrote:
> Hello esteemed Wrenches;
>
> I have been absolutely swamped with inquiries about small, non-UL listed (or
> "UL listing pending") direct PV grid-tie inver
Wrenches,
I noticed an error in my reply below when Allan's second comments
arrived. Correction: the battery is considered 100% discharged (not
80%) at 10.5 volts (1.75 vpc) under the conditions of use.
Kent
Kent Osterberg wrote:
William,
I'll try to add a little to Allan's and
Detailed answers to your questions, as I see this
issue getting worse...
My questions for the group are;
~ Can any energy-generating device, even if it *was*
UL 1741 listed, comply with the NEC if it plugs into
a wall outlet instead of being hard-wired to the
breaker panel?
*** No.
Equipment c
Mark;
An example:
http://tinyurl.com/4p4367b
and a whole home package! Even includes a Kill-Watt for all your energy
production monitoring needs:
http://tinyurl.com/4qgogt9
And for an added bonus if you read now, one for a direct grid tie wind
turbine inverter that takes 3-phase input!
Can you send a link to one of these products?
Mark Frye
Berkeley Solar Electric Systems
303 Redbud Way
Nevada City, CA 95959
(530) 401-8024
www.berkeleysolar.com
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All utility interactive inverters must be connected to a DEDICATED branch
circuit. NO LOADS on the inverter side of the OCPD.
Not to mention that it is the UL1741 listing process that verifies personnel,
property, and utility protection from injury, shock, and fire. This kind of
stuff from Ch
Hello esteemed Wrenches;
I have been absolutely swamped with inquiries about small, non-UL listed
(or "UL listing pending") direct PV grid-tie inverters in the last few
weeks. It appears they are arriving in a flood from China and being sold
on Ebay, and by other online retailers. They are als
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