[RE-wrenches] DC conductor line loss numbers

[Jerry Shafer]

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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