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ContinuousWave: Small Boat Electrical
Battery Negative Distribution
|Author||Topic: Battery Negative Distribution|
posted 03-15-2006 12:44 AM ET (US)
I was checking out the Automatic Charging Relay (ACR) information in the West Marine Catalog. It says to [connect a lead from the ACR] to the "negative distribution point." Now with a fiberglass hull and console, where do you ground it? The batteries?
posted 03-15-2006 11:54 AM ET (US)
Rene' - There should be a negative 'bus bar' (a metal bar with means of connecting other cables) which should be the first 'component' from the negative battery terminal. All negative cables from your electronics and gauges should be connected to this 'bus bar'.
On my 17 Outrage, the bus bar is located inside the console and mounted to the 'ceiling'. These are nothing fancy - just a metallic bar - and may be covered in some manner. --- Jerry/Idaho
posted 03-15-2006 02:44 PM ET (US)
Mahalo for helping me to see the light!
I will be working from a bare console. Have done them before, just setting up this one differently with a ACR and Switch Parallel Panel.
posted 03-15-2006 04:43 PM ET (US)
Rene', here is what you are looking for http://www.boatersworld.com/webapp/wcs/stores/servlet/ ProductDisplay?storeId=10051&catalogId=10051&langId=-1& productId=13359959 . You' wire your positive wires through a fuse or breaker panel.
If you can, it's easier to wire your console tipped over on it's side. Also, use marine grade wire and heat-shrink crimp connectors. Also use tyraps to keep it neat.
posted 03-15-2006 09:43 PM ET (US)
You want the ACR to sense the voltage across the batteries.
To do that, you need to ground it at or very close to the
batteries. With a multiple battery system, the negative
posts of the batteries will be tied together somewhere close,
and that's the place to ground the ACR.
Why? Let's assume you have a couple of batteries in the
posted 03-16-2006 12:39 AM ET (US)
Chuck and David, Thanks!
I have always used a BusBar for pos and one neg. This hook up will be different with the ACR and Parallel Switch.
I appreciate the info on keeping the BusBar close to the batteries Negs'.
That's how the 2005 West Marine Catalog shows it. Grounded between the two batteries.
posted 03-16-2006 07:09 PM ET (US)
The bus bar for the accessories doesn't have to be close to
the battery. If the batteries are in the stern, you can put
the busbar in the console with an appropriate wire. No sense
runing N little wires through the console when one appropriate
(most likely 12 ga.) wire would do.
But the ACR needs to see the real voltage on the batteries,
posted 03-16-2006 10:56 PM ET (US)
Chuck, The batteries will be in the console.
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