[RE-wrenches] DC conductor line loss numbers

[Roy Rakobitsch]

Maybe 600vdc charge controller?

Roy Rakobitsch
NABCEP Certified Small Wind Installer®
NABCEP Certified Solar PV Installer®
Certified Advanced Tower Climbing, Safety & Rescue
Wind/PV Design Engineer
Windsine LLC
631-514-4166
www.windsine.org
On Jul 22, 2015 1:52 PM, "Jerry Shafer" <jerrysgarage01 at gmail.com> wrote:

> 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
>
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