Hey there,
Any best practices out there for low pitch, torchdown weatherproofing? I know
the industry standard (now) is to NOT rely on mastics/sealants alone; that
mechanical flashing is the only form of adequately protecting roof
penetrations. BUT, what about torchdown? There are quite a bit of these types
of roofs in my area, I need to understand the options for future ref. Any help
is appreciated.
Thanks,
Eric
NABCEP Cert. PV Installer
Seattle
Sent from my Verizon Wireless BlackBerry
-----Original Message-----
From: re-wrenches-requ...@lists.re-wrenches.org
Date: Thu, 25 Feb 2010 11:25:52
To: <re-wrenches@lists.re-wrenches.org>
Subject: RE-wrenches Digest, Vol 3, Issue 187
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Today's Topics:
1. Re: Transformerless inverters require special plug leads on
the PV modules, right? (Darryl Thayer)
2. Re: Solar rights precedent (James A. Hartley)
3. Re: Transformerless inverters require special plug leads on
the PV modules, right? (Marv Dargatz)
4. Re: Transformerless inverters require special plug leads on
the PV modules, right? (Brian Crise)
----------------------------------------------------------------------
Message: 1
Date: Thu, 25 Feb 2010 11:11:00 -0800 (PST)
From: Darryl Thayer <daryl_so...@yahoo.com>
To: RE-wrenches <re-wrenches@lists.re-wrenches.org>
Subject: Re: [RE-wrenches] Transformerless inverters require special
plug leads on the PV modules, right?
Message-ID: <601511.61364...@web51901.mail.re2.yahoo.com>
Content-Type: text/plain; charset=us-ascii
The transformer-less inverter does not have the separation between AC and DC as
in a transformer type. The Solar Modules do not have overcurent protection as
in the AC system. So the wire has to be sized Isc x 156% all the way through
the system or larger if required by the AC system.
--- On Thu, 2/25/10, Mick Abraham <m...@abrahamsolar.com> wrote:
> From: Mick Abraham <m...@abrahamsolar.com>
> Subject: [RE-wrenches] Transformerless inverters require special plug leads
> on the PV modules, right?
> To: "RE-wrenches" <re-wrenches@lists.re-wrenches.org>
> Date: Thursday, February 25, 2010, 12:54 PM
> Hi, Mechanix~
>
> Am I correct that the good ol' plug connector leads on
> many solar modules are non-compatible with transformerless
> grid-tie inverters? If so...which module mfrs have switched
> to the different type of wire and how can I be sure?
>
>
>
> Specifically, would the 2010 Sharp 230 polycrystal or the
> Yingli 230 polycrystal modules be properly equipped for use
> with the x-formerless inverters?
>
> ...and...the next time I buy #10 sunlight resistant wire
> for making up my own plug extensions...should I buy a more
> exotic wire type and how do I know what will work?
>
>
>
> Thanks,
>
> Mick Abraham, Proprietor
> www.abrahamsolar.com
>
> Voice: 970-731-4675
>
>
> -----Inline Attachment Follows-----
>
> _______________________________________________
> List sponsored by Home Power magazine
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------------------------------
Message: 2
Date: Thu, 25 Feb 2010 13:12:22 -0600
From: "James A. Hartley" <gr...@inil.com>
To: "RE-wrenches" <re-wrenches@lists.re-wrenches.org>
Subject: Re: [RE-wrenches] Solar rights precedent
Message-ID: <b71a272c9df84bdb9fa1fbb4560f7...@jim9rs6sced6qa>
Content-Type: text/plain; charset="iso-8859-1"
You might start with the Law of Ancient Lights in English common law as to the
rightful access to sunlight and build your case up from that hoary tradition.
There are many instances of this law in practice and its definition. Google
knows most of these.
----- Original Message -----
From: William Miller
To: RE-wrenches
Sent: Thursday, February 25, 2010 12:27 PM
Subject: [RE-wrenches] Solar rights precedent
Friends:
We are applying for a building permit in a small coastal community near here
for a PV system. The arrays will be on the flat roof of a house that is right
up against the allowable building height. The city is requiring that we apply
for a waiver to exceed the allowed height. As I read California law, it allows
public agencies to rule on a permit application only in regards to public
safety and health issues. Repeated letters to the city attorney has failed to
result in how a building height limitation is a mater of public health and
safety.
Have any of you successfully fought a building department on this issue? If
so, is there any written documentation on the issue that I can use?
Thanks in advance,
William Miller
Please note new e-mail address and domain:
William Miller
Miller Solar
Voice :805-438-5600
email: will...@millersolar.com
http://millersolar.com
License No. C-10-773985
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Message: 3
Date: Thu, 25 Feb 2010 11:16:11 -0800
From: Marv Dargatz <mdarg...@enphaseenergy.com>
To: RE-wrenches <re-wrenches@lists.re-wrenches.org>
Subject: Re: [RE-wrenches] Transformerless inverters require special
plug leads on the PV modules, right?
Message-ID: <4b86cc7b.2060...@enphaseenergy.com>
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Message: 4
Date: Thu, 25 Feb 2010 11:24:10 -0800
From: Brian Crise <bcr...@nietc.org>
To: RE-wrenches <re-wrenches@lists.re-wrenches.org>
Subject: Re: [RE-wrenches] Transformerless inverters require special
plug leads on the PV modules, right?
Message-ID: <c21c3c55-9f02-40e5-97d3-ae5201d44...@nietc.org>
Content-Type: text/plain; charset="us-ascii"; Format="flowed";
DelSp="yes"
The NEC requires PV wire in 690.35(D). If you are using
transformerless inverters, you should also take a look at the other
requirements of 690.35.
Regards,
Brian
To contact Brian L Crise:
Address:
16021 NE Airport Way
Portland OR, 97230
Office Phone: (503) 262-9991 x.5054
Direct line: (503) 501-5054
Cell Phone: (503) 869-7481
e-mail: bcr...@nietc.org
On Feb 25, 2010, at 11:16 AM, Marv Dargatz wrote:
> Ungrounded (transformerless) systems require PV wire, not USE2. PV
> wire is listed under the ZKLA category at UL. Go to the UL
> certifications page (
> http://database.ul.com/cgi-bin/XYV/template/LISEXT/1FRAME/index.html
> ) and enter ZKLA in the "UL Category Code" box for a list of
> approved manufacturers.
>
> See ya!
>
> Marv
> 707 763-4784 x7016
>
>
> toddc...@finestplanet.com wrote:
>>
>> USE2
>>
>> Todd
>>
>>
>> On Thursday, February 25, 2010 10:54am, "Mick Abraham"
>> <m...@abrahamsolar.com
>> > said:
>>
>>
>> ...and...the next time I buy #10 sunlight resistant wire for making
>> up my own plug extensions...should I buy a more exotic wire type
>> and how do I know what will work?
>>
>> Thanks,
>>
>> Mick Abraham, Proprietor
>> www.abrahamsolar.com
>>
>> Voice: 970-731-4675
>>
>> _______________________________________________
>> List sponsored by Home Power magazine
>>
>> List Address: RE-wrenches@lists.re-wrenches.org
>>
>> Options & settings:
>> http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org
>>
>> List-Archive:
>> http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org
>>
>> List rules & etiquette:
>> www.re-wrenches.org/etiquette.htm
>>
>> Check out participant bios:
>> www.members.re-wrenches.org
>>
>>
> _______________________________________________
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End of RE-wrenches Digest, Vol 3, Issue 187
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