red31 wrote:
https://2n1s7w3qw84d2ysnx3ia2bct-wpengine.netdna-ssl.com/wp-content/uploads/2014/02/SS3.IOM_.Operators_Manual.01.EN_.pdf
Fail. That's not Morningstar, and I'm not clicking on a link hosted by "2n1s7w3qw84d2ysnx3ia2bct-wpengine.netdna-ssl.com".
Oh, and if you look at the _real_, and current, Morningstar manual for the Sunsaver, http://support.morningstarcorp.com/wp-content/uploads/2014/07/SS-3-IOM_v3.3_WEB.pdf , the phrase in context is:
The unit should be located in the same ambient temperature as the battery.
Locate the controller within 10 ft (3 M) of the battery bank.
The SunSaver does not support remote battery temperature sensing, and it's clear that's why they suggest (should, not must) it be mounted close to the battery. As I said, having the controller adjust for the battery temperature is more important than worrying about voltage drop, which becomes minimal as the battery gets full. Typical temperature adjustment is 0.03 V/degree C, so a 10 degree (18F) change in temperature makes more difference than a 2% voltage drop, even at full current. The SS maxes out at 20A, so that's the drop for a 29 foot one-way run of 8 gauge copper.
