The Blue Seas combiner does the job of charging both banks. When either side
voltage rises above 13.0V, they get connected together. This avoids forgetful
mistakes with the manual switch and does not have the voltage drop of the diode
style combiners.
Connecting the alternator to the house bank helps greatly with the voltage drop
on the wire, which is ALWAYS an issue, also avoids switching mistakes that
could damage the alternator. Downside is that there is no disconnect or fuse
in case of alternator failure.
Lee Haefele
----- Original Message -----
From: Lee
To: [email protected]
Sent: Tuesday, November 04, 2008 7:15 PM
Subject: Re: [Liveaboard] Electrical systems install
Hi John,
Let's look at the usage of the system related to the charging needs. The
house bank has the most draw. The starting bank, should be able to start many
times without needing a charge. The battery switch if used as a (1 -2 - all)
should allow you to combine the house and the starting bank(in any
configuration). In this layout, most of the need for charging should be on the
house bank (solar and wind). The alternator should be attached to the battery
switch (controlled by the switch position) to select the battery bank that you
choose(house or starting or both) for your charging needs. I don't know about
your 110v charger. Mine will do both banks and has attachments for two bank
connections.
-Lee
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of John
Christensen
Sent: Tuesday, November 04, 2008 6:42 PM
To: [email protected]
Subject: [Liveaboard] Electrical systems install
Dear list I am helping a friend install solar panels and wind generator and a
new alternator. We have a plan but I would like to ask you if it sounds like a
GOOD plan.
1 The house bank is 430 amp hours (4 6volt golf cart batteries) they are in
the port cockpit locker and a starting battery is in starboard
2 The wind generator WINDBUGGER is mounted on the mizzen with a 8 gauge wire.
It is 30 ft to the comp. It goes to a 50 amp diode to another 25 amp breaker to
the NC25A Charge controller. From the charge controller to the house batteries
there is an additional 25 amp breaker. (This is according to the diagram that
came with the Charge controller).
3 Instead of the 1-2-both-off rotary switch we have installed a dual circuit
battery switch (on-off-combine) made by blue seas, as well as a battery
combiner (called a automatic charge controller)
4 Instead of running the 100 amp alternator to the common post on the old
rotary switch, we put it to the house bank
Our questions are:
A. We have a 40 amp multi stage charger for 110 where do we put the battery
charger wires?
B. Is it correct that the wire from the wind generator goes to the house bank?
C. The two 50w solar panels are lead to another charge controller (a
Morningstar 6amp) and then straight to the House bank is that correct?
D. Is there a problem with charging from 3 sources, can anyone of the units
burn out (mainly we are worried about the solar panels) because of the power
coming from the other charging sources
This is how far we have come. Man there are so much to think about and
neither of us are electricians so thanks so much for the input
Regards John Miami
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