Thanks for doing this. Chris
On 2/1/2023 4:49 PM, Brian Mehalic via RE-wrenches wrote:
Most firefighters are not electrical engineers; nor are most insurance
agents. However both of those groups are stakeholders with influence
over codes and standards. Some may say too much influence, but the
As 480.7(B) says single and double homes, that going with the mike holt literal
interpretation to me says that even if you have a remote power shed it would
still require the remote disconnect. As that section doesn’t say that the power
system is in the house or not.
(A) doesn’t apply as the
>>> advocates. If someone is on the code panel, they are actually limited in
>>> how they can suggest new changes to the codes, they can only promote public
>>> inputs that are submitted by people like us, so even if it feels like a
>>> waist of time, it really is important that we all submi
ly
>> want to promote our best interests have something they can leverage for us.
>> To those here who do help with the codes and help to advocate for us, THANK
>> YOU SO MUCH!!!
>>
>> Thanks,
>> Kienan
>>
>>
>> *Green-Go Solar Distribution LLC Maxfield
vocate for us, THANK
> YOU SO MUCH!!!
>
> Thanks,
> Kienan
>
>
> *Green-Go Solar Distribution LLC Maxfield Solar LLC (installation and
> consulting company) *
> *maxfieldso...@hotmail.com*
> *(801) 631-5584(Cell)*
> --
> *From:* RE-wrenches on behalf
> of bob--- vi
Kieran:
You’ve got me confused with someone else. I do not pretend to know anything
about Sol-arc. ( I do know if I was inventing electrical equipment I would
not put “arc” in the name.)
Wm
On Thu, Feb 2, 2023 at 3:53 PM Kienan Maxfield via RE-wrenches <
re-wrenches@lists.re-wrenches.org>
t: Re: [RE-wrenches] Remote battery disconnects
SPDs or (MOVs) on the PV input side of a charge controller are not wired to
snub excessive PV voltage.
They are wired from PV+ to GND and the other from PV- to GND and only the two
in series, at double the
MOV clamp voltage would have any effect o
SPDs or (MOVs) on the PV input side of a charge controller are not
wired to snub excessive PV voltage.
They are wired from PV+ to GND and the other from PV- to GND and only
the two in series, at double the
MOV clamp voltage would have any effect on clamping the PV+/PV- voltage.
SPDs are
I have been following this discussion intently. I hate to say it, but it
all sounds like a major case being made for AC-coupled system architecture,
and even integrated "AC Batteries" like Powerwalls and Encharge
that integrate the battery and inverter into listed Energy Storage Systems.
As
Most firefighters are not electrical engineers; nor are most insurance
agents. However both of those groups are stakeholders with influence over
codes and standards. Some may say too much influence, but the fact of the
matter is that code making is a group/consensus process, and very often
none of
On 2/1/2023 2:58 PM, Starlight via RE-wrenches wrote:
Have you (or any) installed surge suppression on the PV input side to
clamp the open circuit voltage surge?
That's not where the issue is and isn't really a solution. As I
explained in my previous e-mail, the issue is the open circuit on
Have you (or any) installed surge suppression on the PV input side to clamp the
open circuit voltage surge?
Larry Crutcher
Starlight Solar Power Systems
On Feb 1, 2023, at 1:23 PM, William Bryce via RE-wrenches
wrote:
I can also backup what Jim has said, and have seen the same gear
I can also backup what Jim has said, and have seen the same gear destroyed
by removing the battery abruptly when the controller is under heavy load.
They can die, and sometimes die spectacularly.
Have seen SolArk inverters integrated MPPT controllers blow up when lithium
battery BMS disconnects.
On 2/1/2023 12:25 PM, Alex MeVay via RE-wrenches wrote:
Although our controllers are probably smaller than what you would be
considering in this discussion, surviving a load dump (suddenly
disconnected battery) is an engineering requirement for us, and likely
would be for other responsible
es; will...@millersolar.com
*Subject:* Re: [RE-wrenches] Remote battery disconnects
Brian and William,
With all due respect, I think your geographical location of
California may be limiting in your understanding of the implications
of local power security.
Where I am in Minnesota and where I work
> Oh, yeah, the charge controller blowing up thing: Does anyone have any
> factual data to share on this?
Although our controllers are probably smaller than what you would be
considering in this discussion, surviving a load dump (suddenly
disconnected battery) is an engineering requirement for
t; supply an AC disconnect (meeting all requirements for accessibility and
> marking) that will disconnect all premise wiring except the pressure pump.
>
>
>
> By the way, I will of course be trying to apply the logic that the voltage
> specification is for nominal battery voltage a
-wrenches; will...@millersolar.com
Subject: Re: [RE-wrenches] Remote battery disconnects
Brian and William,
With all due respect, I think your
geographical location of California may
From:* RE-wrenches [mailto:re-wrenches-boun...@lists.re-wrenches.org] *On
Behalf Of *Jeremy Rodriguez via RE-wrenches
*Sent:* Saturday, January 28, 2023 10:12 AM
*To:* cwar...@entech-engineering.com; RE-wrenches
*Cc:* Jeremy Rodriguez
*Subject:* Re: [RE-wrenches] Remote battery disconnects
*2020 Code
*Sent:* Saturday, January 28, 2023 10:12 AM
*To:* cwar...@entech-engineering.com; RE-wrenches
*Cc:* Jeremy Rodriguez
*Subject:* Re: [RE-wrenches] Remote battery disconnects
*2020 Code Language:*
/*48
oth panel types, and then a dc disconnect with no
>>> code reference. Was trying to convey a reasonable, safe approach. A lot
>>> of bad information from fire department solar consultants making a lot of
>>> money fear mongering, which has led to this type of situati
-5600www.millersolar.comCA Lic. 773985 From: RE-wrenches [mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf Of Jeremy Rodriguez via RE-wrenchesSent: Saturday, January 28, 2023 10:12 AMTo: cwar...@entech-engineering.com; RE-wrenchesCc: Jeremy RodriguezSubject: Re: [RE-wrenches] Remote
t; By the way, I will of course be trying to apply the logic that the
>>>> voltage specification is for nominal battery voltage and this project
>>>> having a nominal 48 volt bank does not require the battery disconnect.
>>>>
>>>&
scadero, CA 93422805-438-5600www.millersolar.comCA Lic. 773985 From: RE-wrenches [mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf Of Glenn Burt via RE-wrenchesSent: Friday, January 27, 2023 11:46 AMTo: William Miller via RE-wrenchesCc: Glenn BurtSubject: Re: [RE-wrenches] Remote battery disconnects
logic that the
>>>> voltage specification is for nominal battery voltage and this project
>>>> having a nominal 48 volt bank does not require the battery disconnect.
>>>>
>>>>
>>>>
>>>> I will let the g
ill let the group know what response I receive. Regardless of how
>>> this works in this jurisdiction, I think these are both valid arguments
>>> worth trying in any jurisdiction requiring the battery disconnect. Some
>>> officials are amenable to dialog and negotiation
g and negotiation and some are less so.
>>
>>
>>
>>
>>
>> William Miller
>>
>>
>>
>> Miller Solar
>>
>> 17395 Oak Road, Atascadero, CA 93422
>>
>> 805-438-5600
>>
>> www.millersolar.com
>>
>> CA
>
> www.millersolar.com <http://www.millersolar.com/>
> CA Lic. 773985
>
>
>
> From: RE-wrenches [mailto:re-wrenches-boun...@lists.re-wrenches.org
> <mailto:re-wrenches-boun...@lists.re-wrenches.org>] On Behalf Of Jeremy
> Rodriguez via RE-wrenches
> Sent
7395 Oak Road, Atascadero, CA 93422
>
> 805-438-5600
>
> www.millersolar.com
>
> CA Lic. 773985
>
>
>
>
>
> *From:* RE-wrenches [mailto:re-wrenches-boun...@lists.re-wrenches.org] *On
> Behalf Of *Jeremy Rodriguez via RE-wrenches
> *Sent:* Saturday,
...@lists.re-wrenches.org] *On
Behalf Of *Jeremy Rodriguez via RE-wrenches
*Sent:* Saturday, January 28, 2023 10:12 AM
*To:* cwar...@entech-engineering.com; RE-wrenches
*Cc:* Jeremy Rodriguez
*Subject:* Re: [RE-wrenches] Remote battery disconnects
*2020 Code Language:*
*480.7 DC Disconnect Methods
t; www.millersolar.com
>
> CA Lic. 773985
>
>
>
>
>
> *From:* RE-wrenches [mailto:re-wrenches-boun...@lists.re-wrenches.org] *On
> Behalf Of *Glenn Burt via RE-wrenches
> *Sent:* Friday, January 27, 2023 11:46 AM
> *To:* William Miller via RE-wrenches
> *Cc:* Glenn Burt
>
iller via RE-wrenches
Cc: Glenn Burt
Subject: Re: [RE-wrenches] Remote battery disconnects
Does the AHJ really want the batteries disconnected from conductors, or does he
really just want the inverters to stop operating and producing AC within the
house?
Obviously there is a big difference her
ne, so please excuse typos and spelling errors.
-- Original message--
*From: *William Miller via RE-wrenches
*Date: *Fri, Jan 27, 2023 2:26 PM
*To: *RE-wrenches;
*Cc: *William Miller;
*Subject:*[RE-wrenches] Remote battery disconnects
Friends:
We have a large-ish residential of
;> www.millersolar.com
>>
>> CA Lic. 773985
>>
>>
>>
>>
>>
>> *From:* RE-wrenches [mailto:re-wrenches-boun...@lists.re-wrenches.org] *On
>> Behalf Of *Glenn Burt via RE-wrenches
>> *Sent:* Friday, January 27, 2023 11:46 AM
>> *To:
*Sent:* Friday, January 27, 2023 11:46 AM
*To:* William Miller via RE-wrenches
*Cc:* Glenn Burt
*Subject:* Re: [RE-wrenches] Remote battery disconnects
Does the AHJ really want the batteries disconnected from conductors, or
does he really just want the inverters to stop operating and producing AC
I believe midnite still has the remote trip DC PNL mount breakers, but of
course, no birdhouse to make it work.
Not sure what the trip trigger needs either as far as voltage.
-MNEDC250RT
Jeremy Rodriguez
Solar Installation / Design
All Solar, Inc.
1453 M St.
Penrose Colorado 81240
Sent by
errors.
-- Original message--
*From: *William Miller via RE-wrenches
*Date: *Fri, Jan 27, 2023 2:26 PM
*To: *RE-wrenches;
*Cc: *William Miller;
*Subject:*[RE-wrenches] Remote battery disconnects
Friends:
We have a large-ish residential off-grid system install coming up.
The AHJ has said
William
We have done 80 kwh Blue planet resi installs in the past (at the time this
was as large as we could go in resi) anyway the BMS has a push to start and
on/off buttons we just connected into them and we compliant, rotory switch
at 24 volts 10 mA is all that is needed, Now not all BMS.s can
Good point Glenn. My question is if this system is in its own building. If so it is probably easier to convince the AHJ about not needing a remote battery disco. JayOn Jan 27, 2023, at 12:46 PM, Glenn Burt via RE-wrenches wrote:
Does the AHJ really want the batteries disconnected
Does the AHJ really want the batteries disconnected from conductors, or does he
really just want the inverters to stop operating and producing AC within the
house?Obviously there is a big difference here and it may be changing as the
code evolves.-GlennSent from my 'smart'phone, so please
Friends:
We have a large-ish residential off-grid system install coming up. The AHJ
has said they will require a remote battery disconnect. I suspect there
will be fire sprinkler controls and a pressure pump that would become
inoperable if this system were engaged. In this case we will apply
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