[RE-wrenches] DC conductor line loss numbers
Jarmo.Venalainen at schneider-electric.com
Jarmo.Venalainen at schneider-electric.com
Wed Jul 22 16:09:45 PDT 2015
Hi:
Copper conduction losses are proportional to (current) x (current) x
(resistance). For the same wire gauge, double the current means that the
losses increase by 4X.
Going from 150 VDC to 300 VDC will therefore allow you use 4X thinner wire
and going up to 600 VDC will allow you to use 16X thinner wire.
It's very non-linear.
JARMO
_____________________________________________________________________________________
Jarmo Venalainen | Schneider Electric | Xantrex Brand | CANADA |
Sales Application Engineer
Phone: +604-422-2528 | Tech Support: 800-670-0707 | Mobile:
+604-505-0291
Email: jarmo.venalainen at schneider-electric.com | Site: www.Xantrex.com
| Address: 3700 Gilmore Way, Burnaby, BC V5G4M1
*** Please consider the environment before printing this e-mail
From:
Jerry Shafer <jerrysgarage01 at gmail.com>
To:
RE-wrenches <RE-wrenches at lists.re-wrenches.org>,
Date:
07/22/2015 11:52 AM
Subject:
[RE-wrenches] DC conductor line loss numbers
Sent by:
"RE-wrenches" <re-wrenches-bounces at lists.re-wrenches.org>
Wrenches
Some time back there was discussion on the conductor size and efficiency
rating requirement for long DC runs.
What I am looking at is this, 400 feet of MCM 400 to keep the line loss at
or below 1% per NEC code for an off grid application, cost vs return is
not acceptable. 2/0 is less than 2.5% and the cost is far less. Specs are
4 strings of 3, 250 watt modules feeding one Outback FM 80 charge
controller. There are lots of things I can do like SMA instread, or 200
VDC charge controller but nothing can be changed except the wire gauge.
Does anyone recall a thread with this topic.
thoughts ??
Jerry
______________________________________________________________________
This email has been scanned by the Symantec Email Security.cloud service.
______________________________________________________________________
_______________________________________________
List sponsored by Redwood Alliance
List Address: RE-wrenches at lists.re-wrenches.org
Change listserver email address & settings:
http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org
List-Archive:
http://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/maillist.html
List rules & etiquette:
www.re-wrenches.org/etiquette.htm
Check out or update participant bios:
www.members.re-wrenches.org
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org/attachments/20150722/0351ad65/attachment-0002.html>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: not available
Type: image/gif
Size: 40194 bytes
Desc: not available
URL: <http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org/attachments/20150722/0351ad65/attachment-0020.gif>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: not available
Type: image/gif
Size: 4274 bytes
Desc: not available
URL: <http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org/attachments/20150722/0351ad65/attachment-0021.gif>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: not available
Type: image/gif
Size: 1869 bytes
Desc: not available
URL: <http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org/attachments/20150722/0351ad65/attachment-0022.gif>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: not available
Type: image/gif
Size: 1897 bytes
Desc: not available
URL: <http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org/attachments/20150722/0351ad65/attachment-0023.gif>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: not available
Type: image/gif
Size: 2041 bytes
Desc: not available
URL: <http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org/attachments/20150722/0351ad65/attachment-0024.gif>
More information about the RE-wrenches
mailing list