[RE-wrenches] Torchdown, low pitched PV. How to weatherproof.
Keith Cronin
electrichi01 at yahoo.com
Thu Feb 25 13:10:52 PST 2010
Eric
You might want to consider using these->
http://www.chemlink.com/docs/datasheets/chemlink_chemcurbs.pdf
Nice video
http://www.youtube.com/watch?v=qaqzk-G5WDk
________________________________
From: "solarepiphany at gmail.com" <solarepiphany at gmail.com>
To: re-wrenches at lists.re-wrenches.org
Sent: Thu, February 25, 2010 9:31:25 AM
Subject: [RE-wrenches] Torchdown, low pitched PV. How to weatherproof.
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-----
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Date: Thu, 25 Feb 2010 11:25:52
To: <re-wrenches at 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_solar at yahoo.com>
To: RE-wrenches <re-wrenches at lists.re-wrenches.org>
Subject: Re: [RE-wrenches] Transformerless inverters require special
plug leads on the PV modules, right?
Message-ID: <601511.61364.qm at 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 <mick at abrahamsolar.com> wrote:
> From: Mick Abraham <mick at abrahamsolar.com>
> Subject: [RE-wrenches] Transformerless inverters require special plug leads on the PV modules, right?
> To: "RE-wrenches" <re-wrenches at 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-----
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------------------------------
Message: 2
Date: Thu, 25 Feb 2010 13:12:22 -0600
From: "James A. Hartley" <grail at inil.com>
To: "RE-wrenches" <re-wrenches at lists.re-wrenches.org>
Subject: Re: [RE-wrenches] Solar rights precedent
Message-ID: <B71A272C9DF84BDB9FA1FBB4560F7F69 at 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: william at 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 <mdargatz at enphaseenergy.com>
To: RE-wrenches <re-wrenches at lists.re-wrenches.org>
Subject: Re: [RE-wrenches] Transformerless inverters require special
plug leads on the PV modules, right?
Message-ID: <4B86CC7B.2060407 at enphaseenergy.com>
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Message: 4
Date: Thu, 25 Feb 2010 11:24:10 -0800
From: Brian Crise <bcrise at nietc.org>
To: RE-wrenches <re-wrenches at 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-AE5201D44FB6 at 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: bcrise at 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
>
>
> toddcory at finestplanet.com wrote:
>>
>> USE2
>>
>> Todd
>>
>>
>> On Thursday, February 25, 2010 10:54am, "Mick Abraham" <mick at 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 at 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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