Re: [RE-wrenches] Step up charge controllers?

[Chris Sparadeo via RE-wrenches]

Just like Jerry mentioned, I’ve gotten out of similar situations by
manipulating the multiple strings in the combiner box to conform to string
voltage requirements. Instead of having 2 strings of 3 modules, with one
well placed burndy connector, you now have a single string of 6.  It can
become more complicated with odd string numbers and fewer MPPT input
options.

On Thu, May 12, 2022 at 5:27 PM Kirk Herander via RE-wrenches <
re-wrenches@lists.re-wrenches.org> wrote:

> it's just another issue I've had lately with older systems. The array is
> hardwired underneath on a 2+ story building @ 24v. An offgrid system being
> prepped to go ongrid w/ a new 240vac/48v inverter. 22 year-old Astropower
> 120w panels. El Sucko.
>
> On Thu, May 12, 2022 at 2:57 PM Jerry Shafer via RE-wrenches <
> re-wrenches@lists.re-wrenches.org> wrote:
>
>> If you have a pv combiner box, you may be able to restring from there and
>> use a 48 vdc charger
>> Jerry
>>
>> On Thu, May 12, 2022, 9:47 AM Kirk Herander via RE-wrenches <
>> re-wrenches@lists.re-wrenches.org> wrote:
>>
>>> Looking to charge a 48 V battery bank from a 24 V old PV array. I guess
>>> I could use a DC to DC converter, but wondering is there any charge
>>> controller out there versatile enough to do it for me?--
>>>
>>> *Kirk Herander / **kirkh@vermont.solar *
>>>
>>> *Owner|Principal, VT Solar, LLC*
>>>
>>> *Celebrating our 31st Anniversary 1991-2022!!*
>>>
>>> *www.vermont.solar*
>>> 
>>>
>>> dba Vermont Solar Engineering
>>>
>>> 802.863.1202
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>
> --
>
> *Kirk Herander / **kirkh@vermont.solar *
>
> *Owner|Principal, VT Solar, LLC*
>
> *Celebrating our 31st Anniversary 1991-2022!!*
>
> *www.vermont.solar*
> 
>
> dba Vermont Solar Engineering
>
> 802.863.1202
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Chris Sparadeo


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Re: [RE-wrenches] Step up charge controllers?

[Kirk Herander via RE-wrenches]

it's just another issue I've had lately with older systems. The array is
hardwired underneath on a 2+ story building @ 24v. An offgrid system being
prepped to go ongrid w/ a new 240vac/48v inverter. 22 year-old Astropower
120w panels. El Sucko.

On Thu, May 12, 2022 at 2:57 PM Jerry Shafer via RE-wrenches <
re-wrenches@lists.re-wrenches.org> wrote:

> If you have a pv combiner box, you may be able to restring from there and
> use a 48 vdc charger
> Jerry
>
> On Thu, May 12, 2022, 9:47 AM Kirk Herander via RE-wrenches <
> re-wrenches@lists.re-wrenches.org> wrote:
>
>> Looking to charge a 48 V battery bank from a 24 V old PV array. I guess I
>> could use a DC to DC converter, but wondering is there any charge
>> controller out there versatile enough to do it for me?--
>>
>> *Kirk Herander / **kirkh@vermont.solar *
>>
>> *Owner|Principal, VT Solar, LLC*
>>
>> *Celebrating our 31st Anniversary 1991-2022!!*
>>
>> *www.vermont.solar*
>> 
>>
>> dba Vermont Solar Engineering
>>
>> 802.863.1202
>> ___
>> List sponsored by Redwood Alliance
>>
>> Pay optional member dues here: http://re-wrenches.org
>>
>> List Address: RE-wrenches@lists.re-wrenches.org
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>> other:
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-- 

*Kirk Herander / **kirkh@vermont.solar *

*Owner|Principal, VT Solar, LLC*

*Celebrating our 31st Anniversary 1991-2022!!*

*www.vermont.solar*


dba Vermont Solar Engineering

802.863.1202
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Re: [RE-wrenches] Step up charge controllers?

[Jerry Shafer via RE-wrenches]

If you have a pv combiner box, you may be able to restring from there and
use a 48 vdc charger
Jerry

On Thu, May 12, 2022, 9:47 AM Kirk Herander via RE-wrenches <
re-wrenches@lists.re-wrenches.org> wrote:

> Looking to charge a 48 V battery bank from a 24 V old PV array. I guess I
> could use a DC to DC converter, but wondering is there any charge
> controller out there versatile enough to do it for me?--
>
> *Kirk Herander / **kirkh@vermont.solar *
>
> *Owner|Principal, VT Solar, LLC*
>
> *Celebrating our 31st Anniversary 1991-2022!!*
>
> *www.vermont.solar*
> 
>
> dba Vermont Solar Engineering
>
> 802.863.1202
> ___
> List sponsored by Redwood Alliance
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Re: [RE-wrenches] Step up charge controllers?

[Maverick Brown via RE-wrenches]

See if the genasun gv8 can do what you want. They have several versions that 
can boost output voltage. 


Maverick Brown
Off-Grid Solar Commander since 2006
Maverick Solar Enterprises, Inc.
 • Solar Commander Remote Power
 • SunFlow Systems Cathodic Protection 
maver...@mavericksolar.com
512-460-9825


> On May 12, 2022, at 11:47 AM, Kirk Herander via RE-wrenches 
>  wrote:
> 
> Looking to charge a 48 V battery bank from a 24 V old PV array. I guess I 
> could use a DC to DC converter, but wondering is there any charge controller 
> out there versatile enough to do it for me?-- 
> Kirk Herander / kirkh@vermont.solar
> Owner|Principal, VT Solar, LLC
> Celebrating our 31st Anniversary 1991-2022!!
> www.vermont.solar
> dba Vermont Solar Engineering
> 802.863.1202
> ___
> List sponsored by Redwood Alliance
> 
> Pay optional member dues here: http://re-wrenches.org
> 
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> 
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[RE-wrenches] Step up charge controllers?

[Kirk Herander via RE-wrenches]

Looking to charge a 48 V battery bank from a 24 V old PV array. I guess I
could use a DC to DC converter, but wondering is there any charge
controller out there versatile enough to do it for me?--

*Kirk Herander / **kirkh@vermont.solar *

*Owner|Principal, VT Solar, LLC*

*Celebrating our 31st Anniversary 1991-2022!!*

*www.vermont.solar*


dba Vermont Solar Engineering

802.863.1202
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Re: [RE-wrenches] Solar Roof Jack

[Jason Szumlanski via RE-wrenches]

I do not believe the Florida Building Code adopted this section. Vents must
terminate at least 6 inches above the roof. Neither the 2017 code currently
in effect nor the 2020 code includes the language of IBC P3103.1.3.

Jason Szumlanski






On Thu, May 12, 2022 at 8:41 AM Daniel Young via RE-wrenches <
re-wrenches@lists.re-wrenches.org> wrote:

> Just curious if there is a reason you don’t just cut the roof vent off
> above the flashing?
>
>
>
> It is allowed by the 2018 IRC and later in section P3103.1.3, solar
> modules are explicitly called out as a reason to cut the vents.
>
>
>
>
> https://codes.iccsafe.org/content/IRC2021P1/chapter-31-vents#IRC2021P1_Pt07_Ch31_SecP3103
>
>
>
> Not all states adopt this of course. Ohio for example redacted this from
> the code version they have adopted. So maybe that is the reason. If not,
> there is your code reference if needed.
>
>
>
> --
>
>
>
> Danny Young
>
> Engineering Team Lead
> Solar Energy Solutions
>
> Lexington | Louisville | Bloomington | Cincinnati | Evansville |
> Indianapolis
>
> 513-448-5176 (mobile)
>
> 877-312-7456 (Main Office)
>
> da...@sesre.com
>
>
>
> *From:* RE-wrenches  *On
> Behalf Of *AE Solar via RE-wrenches
> *Sent:* Thursday, May 12, 2022 7:48 AM
> *To:* RE-wrenches 
> *Cc:* AE Solar 
> *Subject:* Re: [RE-wrenches] Solar Roof Jack
>
>
>
> We just used a few of these recently. Seemed easy enough and plan on using
> more on an upcoming project. We had easy access to the vent in the attic
> which probably helped. Only complaint was that I was worried about the vent
> cap (provided) blowing off and eventually having debris get in there and
> get stuck in the horizontal run on the roof. I’m not a plumber though…so
> maybe I’m over thinking it. We put a screw into the cap just in case
>
>
>
> On Thu, May 12, 2022 at 7:33 AM Jason Szumlanski via RE-wrenches <
> re-wrenches@lists.re-wrenches.org> wrote:
>
> Has anyone used this product? I'm looking for feedback on installation
> ease and your impressions.
>
>
>
> Jason Szumlanski
>
> Florida Solar Design Group
>
> ___
> List sponsored by Redwood Alliance
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> --
>
> Adam Katzman (he/him)
> Autonomous Energies | Owner/Operator
>
> www.AutonomousEnergies.com 
> (518) 567-1468
>
>
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Re: [RE-wrenches] Solar Roof Jack

[Daniel Young via RE-wrenches]

Just curious if there is a reason you don’t just cut the roof vent off above 
the flashing?

It is allowed by the 2018 IRC and later in section P3103.1.3, solar modules are 
explicitly called out as a reason to cut the vents.

https://codes.iccsafe.org/content/IRC2021P1/chapter-31-vents#IRC2021P1_Pt07_Ch31_SecP3103

Not all states adopt this of course. Ohio for example redacted this from the 
code version they have adopted. So maybe that is the reason. If not, there is 
your code reference if needed.

--

Danny Young
Engineering Team Lead
Solar Energy Solutions
Lexington | Louisville | Bloomington | Cincinnati | Evansville | Indianapolis
513-448-5176 (mobile)
877-312-7456 (Main Office)
da...@sesre.com

From: RE-wrenches  On Behalf Of AE 
Solar via RE-wrenches
Sent: Thursday, May 12, 2022 7:48 AM
To: RE-wrenches 
Cc: AE Solar 
Subject: Re: [RE-wrenches] Solar Roof Jack

We just used a few of these recently. Seemed easy enough and plan on using more 
on an upcoming project. We had easy access to the vent in the attic which 
probably helped. Only complaint was that I was worried about the vent cap 
(provided) blowing off and eventually having debris get in there and get stuck 
in the horizontal run on the roof. I’m not a plumber though…so maybe I’m over 
thinking it. We put a screw into the cap just in case

On Thu, May 12, 2022 at 7:33 AM Jason Szumlanski via RE-wrenches 
mailto:re-wrenches@lists.re-wrenches.org>> 
wrote:
Has anyone used this product? I'm looking for feedback on installation ease and 
your impressions.

Jason Szumlanski
Florida Solar Design Group
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www.AutonomousEnergies.com
(518) 567-1468

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Re: [RE-wrenches] Solar Roof Jack

[AE Solar via RE-wrenches]

We just used a few of these recently. Seemed easy enough and plan on using
more on an upcoming project. We had easy access to the vent in the attic
which probably helped. Only complaint was that I was worried about the vent
cap (provided) blowing off and eventually having debris get in there and
get stuck in the horizontal run on the roof. I’m not a plumber though…so
maybe I’m over thinking it. We put a screw into the cap just in case

On Thu, May 12, 2022 at 7:33 AM Jason Szumlanski via RE-wrenches <
re-wrenches@lists.re-wrenches.org> wrote:

> Has anyone used this product? I'm looking for feedback on installation
> ease and your impressions.
>
> Jason Szumlanski
> Florida Solar Design Group
> ___
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> --
Adam Katzman (he/him)
Autonomous Energies | Owner/Operator
www.AutonomousEnergies.com 
(518) 567-1468
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[RE-wrenches] Solar Roof Jack

[Jason Szumlanski via RE-wrenches]

Has anyone used this product? I'm looking for feedback on installation ease
and your impressions.

Jason Szumlanski
Florida Solar Design Group
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