Dear Wind-Sun:
The incident described on your forum is very Interesting and scary. It is
impossible to make any definitive conclusions from the vague information
provided, but here are a few things that got my attention:
--If I could detect, from the before photos provided, a first rate
Some of the hot surface ignitors I have seen draw a lot of current, in the
order of amps. I would expect the inverter to drop out if it were overloaded
however. Also does the magnum drop voltage at very low loads? Where the
furnace controls can not function due to low voltage or poor wave
Jay -
If it is a flat roof it seems like a ballasted system might be the way to go.
What is the beam/truss configuration?
-August
August Goers
Luminalt Energy Corporation
From: jay peltz j...@asis.com
To: RE-wrenches re-wrenches@lists.re-wrenches.org
Hi Jay,
not having any experience with these roofs (what a weird way to build a
roof) if you're doing a flat or near flat mount, I'd look at the
currrent issue of Solar professional magazine. lots on flat roof mounts.
Ballasted is probably going to be your best bet.
if a high tilt (hot
Hi Guys,
This mount install is not on a flat roof, well a few hundred sq feet
are, but mostly on some tilt.
Also they do get hurricanes there, so not sure how well the ballasted
work in that high of wind.
As to the construction, not of my choice anyway. I've never see in
here in the US
I dont' know if you can power just the part this is giving problems
and not the big load which is pumping?
but had a similar problem with an SW trace.
I installed a Exeltech inverter to power that load specifically and
ever since has worked fine.
The guys at Exeltech make a wave form that
I will Third the motion for a ballasted system in this case.
On Tue, Feb 10, 2009 at 6:35 PM, jay peltz j...@asis.com wrote:
I've got a client with a foam core concrete covered roof.
the concrete is 2.5 thick + over metal mesh over 6 ridged foam and then
the same on the inside.
What anchor
A few years back, we had a customer who was having similar problems. I don't
recall if it was a Buderus boiler, but the generator was a Generac. This was
a simple generator backup system. We were able to get the boiler to work
reliably after adjusting the governor on the generator so that it ran
Wrenches,
Thanks to the wind-sun folks for sharing this fire story. There is a lot of
conjecture in the thread, and much of it is wrong. With all due respect to
Solar-Guppy, PV module encapsulant, EVA, is highly flammable, and tedlar
will burn as well. The good news is that there is not a lot
Wrenches,
After looking more closely at the pictures, it appears that they may not be
glass-covered modules. Given the poor manufacturing practices, this was a
fire waiting to happen the moment they turned it on.
The amazing thing is that the installer is going to reinstall the module-and
At the very least, it shows a good reason to not use any of those off-brand
(or no brand) cheap unlisted panels that have been floating around lately.
..
Northern Arizona Wind Sun - Electricity From
Hi Jay
I have experience with similar structures. Is this a Monolithic Dome? Key
Dome?
In any case, with 2.5 of concrete, it almost certainly has welded wire or
rebar or both embedded, so you have lots of strength. Just need to get lucky
when you drill holes to miss the metal. No need to
Yeah, spooky pictures. Certainly that was non-glass glazing. I can make
out a way too unsecured wire at the top left of the array but that might
have been secured before the conflagration event.
Could these panels have been home made by someone in their garage? I
regularly loose cells for sale
Wrenches,
Thank you to you Wrenches who have responded. Keep them coming; I'm
collating all as part of our customer support on this. We have several ideas
to try out.
Darryl, it's not excessive draw. I had a Kill-a-Watt on the AC input during
on-site testing. I saw a momentary peak of 360W (for
Any recommendations for a grid-tie battery-less inverter that can handle a
DC voltage as low as 100V?
thanks,
marco
Marco Mangelsdorf, Ph.D., President
Electrical Contractor License C-26351
69 Railroad Avenue, Suite A-7
Hilo, Hawaii 96720 USA
(808) 969-3281, fax 934-7462
One detail I haven't heard mentioned yet and am curious about - the photo of
the fire damage appears to show the corner of another west(?)-facing array.
I find it curious that the system owner described a 2 kW system made up of
eight 250W(!) modules, which are clearly visible in the topmost system
SB700 comes close. PV Powered's 1100 comes closer, as does the Kaco 1501xi.
Beyond that, Outback GTFX with batteries or Enphase.
Allan
-Original Message-
From: re-wrenches-boun...@lists.re-wrenches.org
[mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf Of Marco
Any
Marco,
Is 100V the absolute floor, or is it the normal operating voltage. I believe
the Power-One inverter can go down to 90V.
Bill.
-Original Message-
From: re-wrenches-boun...@lists.re-wrenches.org
[mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf Of Marco
Sent: Wednesday,
I may be very wrong here and I don’t mean to impugn anyone’s integrity, but
don’t forget that in this era of digital animation movies you can’t always
believe what you see in a photo either. (I'm sure no one here has ever
Photoshopped a photo to make it more presentable looking.) I couldn't
This seems corroborating. It has GOT to be the same situation:
http://www.examiner.com/x-432-Wedding-and-Marriage-Examiner~y2009m2d10-Our-wedding-anniversary-like-a-house-on-fire-literally
Search the page for solar to get to the crux of it, and
.
P.S. Tempered glass won't melt, but clear
Amazing how this ' stuff ' just bounces around--Note the ' for more info' box
at the bottom of the examiner article.
It's the Fire Link.com story wrenches discussed last week---
Ken
- Original Message -
From: Michael Welch
To: 'RE-wrenches'
Sent: Wednesday, February 11,
Michael - it gets worse - if you look at the bottom of the website with
the story about them having to leave Disneyland to run back to there
house which was on fire - there are some links to related items:
For more info:
Screamin' is right: my favorite ride at the park
Traditional
Please send it to me too. Muchos gracias, Peter
Peter T. Parrish, President
California Solar Engineering, Inc.
820 Cynthia Ave., Los Angeles, CA 90065
Ph 323-258-8883, Mobile 323-839-6108, Fax 323-258-8885
CA Lic. 854779, NABCEP Cert. 031806-26
peter.parr...@calsolareng.com
-Original
You have probably never looked close at many photos. I think there is a danger
of getting paranoid here and ascribing some deep conspiracy to the simple fact
of some non-spec or even non-legal panels burning up.
It is known as depth of field, and is familiar to anyone photographer that has
On 2/11/09 6:48 PM, Michael Welch wrote:
This seems corroborating. It has GOT to be the same situation:
http://www.examiner.com/x-432-Wedding-and-Marriage-Examiner~y2009m2d10-Our-wedding-anniversary-like-a-house-on-fire-literally
I'll be teaching Thursday afternoon and Friday morning. See you there.
Bill.
-Original Message-
From: re-wrenches-boun...@lists.re-wrenches.org
[mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf Of David
Palumbo
Sent: Wednesday, February 11, 2009 7:51 PM
To: RE-wrenches
Re: [RE-wrenches] FW: Panel FireA new term for bargain basement modules?
..
- Original Message -
From: David Brearley
To: al...@positiveenergysolar.com ; RE-wrenches
Sent:
Allan, there are 4 modules pictured in the ³before² photo, not 8. The after
photo show the ³good² modules, the ones that did not burn. This suggests
there are 4 module each on two separate roof faces. Please have another look
at the before picture and count the frames. In the before picture each
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