[RE-wrenches] Fwd: Re: Cantilevered array
drake.chamberlin at redwoodalliance.org
drake.chamberlin at redwoodalliance.org
Tue Feb 13 07:54:46 PST 2024
If the array covers the rain gutters, doesn't that prevent the gutters
from catching rain? Doesn't the edge of the extended modules form a drip
edge, where water will not be diverted by the gutters, but hit the
ground directly?
Will the gutters be accessible for future maintenance?
_Drake Chamberlin_
_Athens Electric LLC_
_Ohio Electrical Contractor's License 44810_
_NABCEP Certified PV Installation Professional_
---
On 2024-02-12 11:02, Christopher Warfel wrote:
> Hi, in what way? The loading is obviously less, and the clamps are rated for the load.
>
> On 2/12/2024 10:56 AM, drake.chamberlin at redwoodalliance.org wrote:
>
> How do you deal with the rain gutters?
>
> Drake Chamberlin
>
> Media & Communication Action Project
>
> https://m-cap.org/
>
> ---
>
> On 2024-02-08 16:46, Sky Sims via RE-wrenches wrote:
>
> I've designed and installed several thousand cantilevered arrays over the last three decades and never had a single issue. Unfortunately, code changes have taken a turn for the worse in most jurisdictions and oftentimes disallow cantilevering.
>
> Sky Sims
> Https://EcologicalSystems.org
> 732-462-3858
>
> On Jan 19, 2024, at 3:09 PM, Christopher Warfel via RE-wrenches <re-wrenches at lists.re-wrenches.org> wrote:
>
> I've done a fair amount of roof mounted solar structural compliance, and I would say that the cantilevered design looks like a disaster waiting to happen. You could not use conventional solar racking products. Chris
>
> On 1/13/2024 12:42 PM, William Miller via RE-wrenches wrote:
>
> Drake
>
> My earlier reply may have been a bit facetious. What I meant by it was that big-box solar contractors can be lazy when it comes to solar design. They will rely totally on satellite imagery and not check the design on the ground. This is how you get solar proposed for shaded areas, where skylights and roof vents are located, or overhanging thin air. This may be what is happening in the image you shared.
>
> What is unique here is someone actually specified overhanging panels. Looking more closely at the image, a roof outline is shown but it is not clear that the outline is actually situated over a building. It almost looks like there is landscaped area inside the outline.
>
> The solution of course is to get on out there, measure the roof and any obstructions and analyze the shading. I use the Sun Seeker [1] app for IOS for the shading analysis.
>
> William
>
> Miller Solar
>
> 17395 Oak Road, Atascadero, CA 93422
>
> 805-438-5600
>
> www.millersolar.com [2]
>
> CA Lic. 773985
>
> From: RE-wrenches [mailto:re-wrenches-bounces at lists.re-wrenches.org] On Behalf Of Drake Chamberlin via RE-wrenches
> Sent: Saturday, January 13, 2024 8:47 AM
> To: RE-wrenches
> Cc: drake.chamberlin at redwoodalliance.org
> Subject: [RE-wrenches] Fwd: Re: Cantilevered array
>
> Here is a larger snip of the situation.
>
> <image001.png>
>
> Label says overhang from upper roof.
>
> _Drake Chamberlin_
>
> _Athens Electric LLC_
>
> _Ohio Electrical Contractor's License 44810_
>
> _NABCEP Certified PV Installation Professional_
>
> ---
>
> On 2024-01-12 07:29, Jason Szumlanski wrote:
>
> Are you sure that's what you're looking at? To me, that looks like there was an addition made to the house, and maybe it's a multi-pitch roof. That lower part might be a covered wrap-around porch.
>
> Jason Szumlanski
>
> Principal Solar Designer | Florida Solar Design Group
> NABCEP Certified Solar Professional (PVIP)
> Florida State Certified Solar Contractor CVC56956
>
> On Thu, Jan 11, 2024 at 5:59 PM Drake Chamberlin via RE-wrenches <re-wrenches at lists.re-wrenches.org> wrote:
>
> I was given a drawing, produced by a very large solar company, showing the array cantilevered over the edge of the roof by several feet.
>
> <image002.png>
>
> Notice how the array hangs out over the lawn for several feet. Is there anyway that this is a legitimate way to mount modules?
>
> Thanks,
>
> Drake
>
> _Drake Chamberlin_
>
> _Athens Electric LLC_
>
> _Ohio Electrical Contractor's License 44810_
>
> _NABCEP Certified PV Installation Professional_
>
> --
>
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Christopher Warfel
ENTECH Engineering, Inc.
PO Box 871, Block Island, RI 02807
401-466-8978
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<cwarfel.vcf> _______________________________________________
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Christopher Warfel
ENTECH Engineering Inc.
PO Box 871, Block Island, RI 02807
401-477-5773
[3]
Links:
------
[1]
https://apps.apple.com/us/app/sun-seeker-tracker-surveyor/id330247123
[2] http://www.millersolar.com/
[3] https://entech-engineering.com/Home/default.php
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