[RE-wrenches] Best practices for conduit penetration on roof

Mon Nov 26 15:28:05 PST 2012

Not to be too nit-picky, but I think its a good idea to distinguish between
branch circuits (parallel connections) and strings (series connections).
Enphase inverters are wired in parallel while string or central inverters
require modules to be wired in series (with parallel strings as an
option).  I know you know this Jason, just wanted to clarify.

For a brighter energy future,

Andrew Truitt
NABCEP Certified PV Installer™ (ID# 032407-66)****

Principal
Truitt Renewable Energy Consulting****

(202) 486-7507****

http://www.linkedin.com/pub/andrew-truitt/8/622/713

"Don't get me wrong: I love nuclear energy! It's just that I prefer fusion
to fission. And it just so happens that there's an enormous fusion reactor
safely banked a few million miles from us. It delivers more than we could
ever use in just about 8 minutes. And it's wireless!"

~William McDonough

On Mon, Nov 26, 2012 at 11:50 AM, Jason Szumlanski <jason at fafcosolar.com>wrote:

> I just called Soladeck and they are sending me some more info on
> availability. I'll pass it along when I get it. I didn't realize they made
> an AC roof mounted string combiner solution. That's a huge help for 2 or 3
> string Enphase installations (they make both combiners).
>
> While on the subject, we recently started using the Enphase cable couple
> with Type TC-ER cable to extend cabling to junction boxes when necessary...
> No more wasting trunk cable connectors! I suppose Type TC-ER could be used
> all the way to the main distribution panel, thereby eliminating junctions
> on the roof, but I haven't looked into the cost/benefit of that idea.
>
> *Jason Szumlanski*
>
> *Fafco Solar*
>
>
>
> On Mon, Nov 26, 2012 at 1:26 PM, Gary Willett <
> gary at icarussolarservices.com> wrote:
>
>>  NICK:
>>
>> I could not find the AC model numbers you provided on the SolaDeck web site.
>> Do you know the manufacturer, and the voltage and temperature ratings,
>> for the 2-pole 20A AC breakers?
>>
>>       Regards,
>>
>>
>> Gary Willett, PE
>> Icarus Engineering LLC****
>>
>> Icarus Solar Services LLC
>> ****
>>
>>   On 11/26/2012 11:54 AM, Nick Soleil wrote:
>>
>> Hi wrenches;
>>
>> SolaDeck Models 0760-41AD and 0766-41AD are rated for up to 60A at 240Vac.
>>
>> It can be ordered with DIN rail mounted AC breakers and a combiner kit.
>> The 2 - 20A circuit combiner kit is part 0760K2AC.
>>
>> I'd recommend checking with a distributor or on SolaDeck's website for
>> the most current information.
>>
>> Nick Soleil,
>> Enphase Energy
>>
>>
>> On Sun, Nov 25, 2012 at 7:44 AM, Kent Osterberg <kent at coveoregon.com>wrote:
>>
>>> My understanding has been that the Soladeck has only been listed for DC
>>> wiring. Perhaps they have a manufacturer rep on RE-wrenches that can
>>> clarify.
>>>
>>> Kent Osterberg
>>> Blue Mountain Solar, Inc.
>>> www.bluemountainsolar.com
>>>
>>>
>>>
>>> On 11/25/2012 6:20 AM, Dave Palumbo wrote:
>>>
>>>> Rich,
>>>>
>>>> We have been using SolaDeck PV roof mount enclosure. NEMA 3R with a
>>>> flashed
>>>> penetration. Can use for combining, or simply as a pass through box.
>>>>
>>>> Dave
>>>>
>>>> David Palumbo
>>>> Independent Power LLC
>>>> 462 Solar Way Drive
>>>> Hyde Park, VT 05655
>>>> www.independentpowerllc.com
>>>> NABCEP Certified PV Installer
>>>> Vermont Solar Partner
>>>> 25 Years Experience, (802) 888-7194
>>>>
>>>>
>>>>
>>>>
>>>> -----Original Message-----
>>>> From: re-wrenches-bounces at lists.re-wrenches.org
>>>> [mailto:re-wrenches-bounces at lists.re-wrenches.org] On Behalf Of Rich
>>>> Nicol
>>>> Sent: Sunday, November 25, 2012 8:11 AM
>>>> To: 'RE-wrenches'
>>>> Subject: [RE-wrenches] Best practices for conduit penetration on roof
>>>>
>>>> Wrenches,
>>>> We typically run conduit for roof mounts over the edge of the roof to
>>>> the
>>>> eaves, rather than penetrate the roof whenever possible. An upcoming
>>>> installation on an freshly asphalt shingled roof requires that we
>>>> penetrate
>>>> the roof for the conduit run (Enphase). I'm wondering if there are any
>>>> suggestions for preferred flashing products and best known practices.
>>>> It's
>>>> always seemed to me that the typical Oatey type flashing dries and
>>>> cracks
>>>> eventually.
>>>> Thanks for your insights..
>>>> Rich
>>>>
>>>>
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>>
>>
>> --
>>
>> Cordially,
>>
>> *Nick Soleil*
>>
>> *Field Applications Engineer
>> *
>>
>> *Enphase Energy*
>>
>> Mobile: (707) 321-2937
>>
>>
>> **
>>
>> *Enphase Commercial Solar.* *Limitless.*<http://www.enphase.com/commercial?utm_source=email&utm_medium=sig&utm_campaign=Comm2012>
>>
>> *
>> *<http://www.enphase.com/commercial?utm_source=email&utm_medium=sig&utm_campaign=Comm2012>
>>
>> 1420 North McDowell
>>
>> Petaluma, CA 94954
>>
>> www.enphase.com <http://www.enphaseenergy.com/>
>>
>> P: (707) 763-4784 x7267
>>
>> F: (707) 763-0784
>>
>> E: nsoleil at enphaseenergy.com
>>
>>  [image: nabcep logo] Certified Solar PV Installer #03262011-300
>>
>> “Don’t get me wrong: I love nuclear energy! It’s just that I prefer
>> fusion to fission. And it just so happens that there’s an enormous fusion
>> reactor safely banked a few million miles from us. It delivers more than we
>> could ever use in just about 8 minutes. And it’s wireless! .”
>>
>> - William McDonough
>>
>>  This email message is for the sole use of the intended recipient(s) and may contain confidential and/or privileged information. If you are not an intended recipient, you may not review, use, copy, disclose or distribute this message. If you received this message in error, please contact the sender by reply email and destroy all copies of the original message.
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