August:
I read the referenced report. It does not address the concern I raised— that is
the breaker specified unbonds a system that I believe is supposed to be bonded.
William
> On Jul 23, 2019, at 8:38 AM, August Goers wrote:
>
> Hi William -
>
> This article is a few years old, but I thi
Hi William -
Check out the Solarpro Magazine archive May/June 2017 issue page 34: it
addresses "functional grounded PV systems."
https://docs.wixstatic.com/ugd/d49ff9_ccc99efe7b344f6a945ca2e00f8a71d8.pdf
And the definition found in 2017 NEC 690.2:
[image: image.png]
Yes, the normally grounded w
pient, please contact the sender immediately and permanently
delete the original and any copies of this email and any attachments thereto.
Thank you.
From: RE-wrenches On Behalf Of
Darryl Thayer
Sent: Monday, July 22, 2019 10:18 PM
To: William Miller ; RE-wrenches
Subject: Re: [RE-wrenches] DC
Hi William -
This article is a few years old, but I think describes ground fault
detection issues well:
http://www.solarabcs.org/about/publications/reports/blindspot/pdfs/inverter_groundfault-2013.pdf
I don't have experience (at least since the late 90s) with the type of GFD
breaker you describe
Hi Bill, I have thought about it also. The ground fault detection
interruption system does elevate one of the conductors to voltage. This
makes it hazardous. However, it also protects from a PV hot to ground arc
fault. There are three types of arc faults in PV systems, the ground fault
arc, the
I can see your point but I know from direct experience that the GFCI in
an XW system will trip during a close lightning strike. I have seen this
along with a few clients. The XW system has a series of escalating faults
that will shut down the inverter if the strike is close. To me it is worth
it
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