Dehn. Good info on their site.
https://www.dehn-usa.com/en-us/dehn-spd-configurator
Brian
> On Jun 24, 2021, at 5:41 PM, Kirk Herander, VSE wrote:
>
>
> Hello,
> Can anyone recommend a 1000 v arrestor for a 850 v array? Had a storm event
> this week which requires research. Thanks.
>
> Ki
Dehn has options as well as lots of good resources.
https://www.dehn-usa.com/en-us/dehn-spd-configurator
Brian
> On Jun 24, 2021, at 5:41 PM, Kirk Herander, VSE wrote:
>
>
> Hello,
> Can anyone recommend a 1000 v arrestor for a 850 v array? Had a storm event
> this week which requires rese
Hello,
Can anyone recommend a 1000 v arrestor for a 850 v array? Had a storm event
this week which requires research. Thanks.
Kirk Herander / kirkh@vermont.solar [mailto:kirkh@vermont.solar]
Owner|Principal, VT Solar, LLC
Celebrating our 30th Anniversary 1991-2021!!
www.vermont.solar
[https://n
We always put our assumption in our plan notes, based on our
interpretation of 250.52(A)(7). AHJs have never questioned it, and we
also tie the pole to any rebar, so its all one big happy grounding
electrode.
Ray Walters
Remote Solar
303 505-8760
On 6/24/21 6:49 PM, frenergy wrote:
Ray,
Ray,
I couldn't agree more, its been my experience over the
years that using 20 feet of #4 rebar in a building's footing was kosher
and accepted NEC 250.52(3). There's a heck of a lot more surface area
in 8" pipe 5-6 feet into the earth than rebar in a foundation footing.
The gr
Usually a steel pole in concrete has enough surface area to qualify as a
plate electrode under 250.52(A)(7). It needs to be at least 2 sq ft and
1/4" thick, and have an electrically conductive surface. So we just
drill and tap our ground connection into the pole, near the combiner box.
Ray W
I just received this email, as I'm sure many of you have. I would encourage
you to reach out to your Enphase rep and push back on this insane decision.
The installer toolkit has enough quirks, bugs, delays, and issues already.
Adding more delay by enforcing the meter wizard is not installer friendl
For all of our free standing arrays we now use a Ufer clamp to the rebar either
cage or just anti spin rebar that is welded to the pole in the concrete, with
#4 braided copper up to the pole combiner box, inverter, etc. for our ground.
With a pole mount & a concrete base it is way easier & less e
8 matches
Mail list logo
