Hi All,
My 2 cents.
UL1741 and IEEE 1547 talk about Anti Islanding requirements for grid
interactive inverters. It is possible in theory, if the load on the grid
exactly matched the pv production you could have an islanded situation. But as
soon as the teeter totter tipped either way, the island collapses.
I agree with Chris, if it were to happen, then the inverter manufacturer would
be at fault. -Wes Kennedy 303-653-3073
From: Chris Mason <[email protected]>
To: RE-wrenches <[email protected]>
Sent: Sunday, November 22, 2015 3:34 PM
Subject: Re: [RE-wrenches] Inverter back feed liability
As long as the inverter carries a UL listing, it is the manufacturer's
liability.
On Sun, Nov 22, 2015 at 6:10 PM, <[email protected]> wrote:
worst case scenario, a battery based inverter system trying to power the grid
would immediately shutdown on overload as the "infinite load" of the grid would
look like a dead short. also, all utility workers treat lines as "live" and
routinely short out feeders before working on them... so the likelihood of this
being an issue is extremely tiny. someone else would have to address the
liability issue, but i imagine this is covered in the utility's net metering
contract. todd
On Sunday, November 22, 2015 1:19pm, "gary easton" <[email protected]> said:
Hello Wrenches,I have an electrical engineer customer that asked me a "what if"
that I had not heard before. If an inverter somehow back feeds the grid during
an outage and damages something or hurts someone who is liable?
--
Gary Easton
Appalachian Renewable PowerStewart, Ohio 45778
NABCEP Certified Solar PV
T: 740-277-8498 www.arp-solar.com
“First they ignore you. Then they laugh at you. Then they fight you. Then you
win.”
~Ghandi
Sent from Finest Planet WebMail.
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--
Chris MasonNABCEP Certified Solar PV Installer™Solar Design EngineerGenerac
Generators Industrial technician
www.cometsolar.com264.235.5670869.662.5670Skype: netconcepts
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