Shadow, thanks for the link, it's a great read (and saved to favorites).
Not to hijack the thread, but wanting more informed minds than my own to weigh in...
With the mess of cable required to achieve equal lengths from each battery to the buss bar and/or charge/discharge point, doesn't the field around each cable come into play with the field of other cables it crosses paths with or runs parallel to?
What I am getting at is the field of energy that a DC clamp meter can read MUST interact with other fields of energy around other cables. If you ran the + and - buss bars fairly close together (2"?) wouldn't there be losses incurred? If an insulated + cable crossed within an inch of the path of a - buss bar wouldn't that change the charge/discharge pattern?
Please bear with me because I really don't understand the electrical side of RE very well and want to understand it better.
BTW I posted this here because I think it is still on topic about wiring battery banks.