Hi Joel,
I believe AEE sells them as well,
jay
peltz power
On Nov 21, 2008, at 12:42 PM, Joel Davidson wrote:
Tyco makes solar labels. See
www.tycoelectronics.com/AboutUs/news/getpdf.asp?id=1363&f=solar_labels_flyer_final.pdf
At least one reseller offers the labels. See
http://store.altene
The only thing I am aware of wrt to fused DC discos is the notion that PV
runs that penetrate a building shell need over current protection. The City
of Santa Monica used to (and may still) have this requirement.
The (non) issues as I understand them:
(1) PV modules should be treated as a
Ahhh yes... I love this NEC signage requirement. It goes a long way toward
re-assuring inspectors and others that the inverter does a reliable job
disconnecting if the grid goes down. I will put this at the top of my 690
improvement list.
Along the same lines: we oughta sell lightbulb ba
Tyco makes solar labels. See
www.tycoelectronics.com/AboutUs/news/getpdf.asp?id=1363&f=solar_labels_flyer_final.pdf
At least one reseller offers the labels. See
http://store.altenergystore.com/Enclosures-Electrical-and-Safety/NEC-Compliant-Safety-Labels/NEC-Compliant-Grid-Tie-Safety-Labels/p661
In a message dated 11/20/2008 9:57:54 A.M. Pacific Standard Time,
[EMAIL PROTECTED] writes:
It opens when the genny is on) might be
easier than a NO relay on the grid-side. Anyone do it this way?
Kelly, I would do this and sleep at night.
Don
**One site has it all. Your
the real-time voltage difference in a 240 V AC
system can be 41% greater than 240 V.
In any event, any Code-compliant solutions would be greatly appreciated.
- Peter
Peter T. Parrish, President
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In 2008, we have had to replace our standard Sq. D HU361RB used since our
beginnings, with the Sq. D H361RB (U stands for unfused). Was there some
sort of code change NEC or CBC maybe that made most jurisdictions in So Cal
suddenly start requiring fused DC disconnects? Typically, we fill the fus
Yes we have T-corrected the Voc. One of the nice things we have going for us
in the LA area, is the moderating influence of the ocean. 90% + of our
systems never see record cold temperatures below 14 def F.
You are correct about the Vdc rising upon disconnection (from Vmp to Voc)
and DC arcs be
Peter:
I am resending, the first version inexplicably deleted some text:
An arc is created in the process of disconnecting any current under
load. DC circuits have an enhanced ability to sustain that arc. PV
circuits exacerbate this problem as a short or load is disconnected because
they ca
Peter:
An arc is created in the process of disconnecting any current under
load. DC circuits have an enhanced ability to sustain that arc. PV
circuits exacerbate this problem as a short or load is disconnected because
they can sustain a short but the voltage rises drastically as a circuit is
Peter,
Many general duty safety switches, such as the Siemens GNF321R, are
rated for 250 volts dc. They usually require the use of two switch poles.
Kent Osterberg
Blue Mountain Solar
Peter Parrish wrote:
Peter T. Parrish, Ph.D., President
California Solar Engineering, Inc.
820 Cynt
Peter T. Parrish, Ph.D., 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
[EMAIL PROTECTED]
_
From: Peter Parrish [mailto:[EMAIL PROTECTED]
Sent: Frida
I believe you would just determine the size of the J-Box based on the largest
sized conduit entering and leaving the box.
Code: 314.28 A 1&2
Carl Hansen___
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List Address: RE-wrenches@lists.re-wrenches.org
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At 05:40 AM 11/21/2008, you wrote:
I brought this subject up in class. Chuck says he doesn't think
there's anything in the code about it. the closest thing I could
come up with was clamps -- so you'd relate it to the largest
conductor in the box. But I'm a baby too. i like over sized boxes. db
I brought this subject up in class. Chuck says he doesn't think there's
anything in the code about it. the closest thing I could come up with was
clamps --
so you'd relate it to the largest conductor in the box. But I'm a baby too. i
like over sized boxes. db
Dan Brown
President
Foxfire Energy
The Amish builders in our area swear by "Faded Glory" from Walmart.
Cheap in price and best for traction, especially on steel roofs.
Mark
Original Message Subject: [RE-wrenches] ShoesFrom: "Mark Frye" <[EMAIL PROTECTED]>Date: Thu, November 20, 2008 4:29 pmTo: "'RE-wrenches'"
How close is the transfer panel from the main panel? If the distance is not
to far then actuate the relay (nc) from the generator source NOT the
utility. Generator running the relay is opened, only need to switch one leg
of the SMA stuff as the reduced input voltage would keep it from
connecting.
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