Wrenches,
I have an project for 18 modules mounted with Unirac Sun Frame on a 5V metal
roof. Typically we drill through the metal and lag L feet to blocking or
rafters if they are accessible. Does anyone know of a better solution for
this situation? I have looked at the Ejot fasteners by Schlet
Seconded! AMEN.
Dick Ratico
Solarwind Electric
--- You wrote:
Steven,
A Line Side Tap, by nature, allows us 100% of the Service Entrance Conductor
Ampacity. This typically ~equals Main Breaker rating, but is regardless of
the Main Breaker rating or size of Loads, it's about the conductor. NEC
Ryan,
Agreed that the line side tap does not necessitate any change in the size of
the main... we got off track a bit there. Thanks for straightening that out.
The initial question from Nick was whether he could _avoid_ a line side tap
or service upgrade. He wants an exception to install load side
Wrenches,
The thread about supply side overcurrent protection got me thinking about
the old split-bus panels. I don't see any theoretical difference between
landing on a breaker in the top section of a split-bus service panel and
making a line side tap. For example, if you have a 200A split-bus ser
I am installing a PV array at about 400Vdc on a metal roof. The inverter
is located a very long way from the array. I am contemplating just
running a positive conductor for most of the run. I was thinking about
connecting the negative PV conductor to a lug solidly bonded to the
metal roof material.
NICE ONE :)
-Chris Anderson
Chief Technology Officer
Resources Group
C: 603-732-2411
Borrego Solar Systems
-Original Message-
From: re-wrenches-boun...@lists.re-wrenches.org
[mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf Of Jason Szumlanski
Sent: Thursday, April 01
I've oft wondered why we didn't use this time tested automotive wiring method
more in PV; especially at higher voltages.
An energized roof is a happy roof as they say.
You go Solar Guru.
R. Walters
r...@solarray.com
Solar Engineer
On Apr 1, 2010, at 10:53 AM, Jason Szumlanski wrote:
> I am i
I'm thinking 250.161(A)2 might apply.Dan BrownPresidentFoxfire Energy Corp.Renewable Energy Systems(802)-483-2564www.Foxfire-Energy.comNABCEP #092907-44
Original Message
Subject: Re: [RE-wrenches] Using Metal Roof as conductor
From: Chris Anderson
Date: Thu, April 01, 2010 12:5
I see absolutely no Code compliance issues with this method.
The April Fool's Code that is...
Brian Teitelbaum
AEE Solar
-Original Message-
From: re-wrenches-boun...@lists.re-wrenches.org
[mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf Of Jason Szumlanski
Sent: Thursday,
Besides saving copper you've also solved the squirrel chewing conductors
problem!! Anyone have good recipes for char-broiled squirrel?
>From the Solar, Wind and Hydro powered office of Jeff Oldham/Regenerative
>SOLutions
Penny Sto
Ryan,
I agree with you 100% with the caveat that it's a straight grid-tied PV system.
A battery-backup system is a bit different. Loads are being transferred from
the main service panel to the backup load panel. When there's no sun, the
loads on the backup load panel are drawing from the gri
Ray,
I think Daryl is on to something. I would suspect a line problem
(under-sized feeder, bad connections, failing transformer, trees rubbing
wire, someone else on the feeder with noisy or large intermittent loads,
etc.). Utility transformers can degrade for a long time before they fail. In
Thanks Joel. I would also add that the utility also ran a much larger
feeder line from the transformer to my house, likely to cover all their
bases.
Daryl
> Ray,
>
> I think Daryl is on to something. I would suspect a line problem
> (under-sized feeder, bad connections, failing transformer, tre
Very good idea for the cost-conscious consumer and installer! It could
also lower PV module cleaning and maintenance costs by dramatically
reducing pigeon, squirrel and other avian or rodent populations that
foul PV arrays and chew wires.
My consulting client at our meeting this morning said h
Daryl (penobscotsolar at midmaine.com) writes:
>I saw the fault "high ac input voltage" at least three times. I changed out
>the boards in the inverter TWICE, both times freebies from OutBack. I checked
>battery spec. grav., programmed it and re-programmed it, talked ad nauseum on
>the phone wi
Check this out: this company claims to have patented a mounting system which
will allow their 1.4kw machine (or multiples thereof) to be mounted on a
roof ridge. I cannot find a power curve of their product on their website,
amongst other things. Opinions, experiences please, thanks.
www.windenergy
HI all
my last posts have not shown, heres hoping.
I have seen two of these installed on roofs. I have and one of my students now
a solar installer,(NABCEP) has been called to repair. he moved the turbine and
placed the turbine on a bergey tower, and it appears to perform like a XL0.1
(1kW) it
Hi Kirk,
There are far too many words needed to describe the problems associated with a
roof mounted system like this. I will summarize it: Today is April 1st (but
don't you be fooled)!!
Here's a list of all kinds of DIY, tinkerers dreams and wishful thinking
systems. http://peswiki.com/index
Their "patented mounting system" (!) will not make up for the laws of physics.
And even if it worked as claimed (small wind turbine systems never do,
especially if roof mounted) it is still pretty expensive. They claim 1400
watts, but typically such an install would get around 1/4 of that for mo
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