Mic wrote:
On Sat, 20 Aug 2005 03:23:08 GMT, (Mic) wrote:


On Fri, 19 Aug 2005 14:34:56 GMT, (Mic) wrote:



But what should be given the fact of 2 alternators, 1 reg and 2 ?
battery sets what should be the proper config. ie where the sensing
voltage cable should be going, should all batteries be in parallel
when charging, etc.

ANSWER
FYI
http://www.amplepower.com/wire/dual_alt/index.html



Two Engines ..... One Regulator

Bad idea, Mic, very bad. You just created two areas of single point
failure into a system intended to provide redundancy.

There may be some systems that can benefit from this, but when both
engines are running, there is usually more than enough power generated
to charge the batteries. In fact, I often reduce the alternator
output because my small engines can't push the boat at full speed and
charge at 100 Amps at the same time!

The bigger issue is often running on one engine, where the complex
wiring creates potential pitfalls, as I've mentioned. Also,
redundancy is important. Twin engines with twin charging systems has
come in handy on more than one occasion, reducing the affects of a
breakdown to a minor annoyance.

BTW, Balmar has there own version, which is designed to work with two
regulators. This makes a bit of sense if you have two identical
systems, since they can beat against each other at times. I never
encountered this problem when I had two smaller alternators; and now
that I have one large and one small, there's no problem in this regard.

http://www.amplepower.com/primer/twoeng/index.html

INCLUDING DIAGRAM

I belive that the answers to the questions can be found at the above
URL's.