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 > Changing from 12 v to 6 v batteries-connection ?

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74vette

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Posted: 01/01/13 04:37pm Link  |  Print  |  Notify Moderator

I am in the process of changing batteries in my 5th wheel. I currently have 2 12 volt batteries and because of the brackets, I am restricted to group 24 size batteries. I have several positive and negative cables currently run to the studs of both 12 volt batteries. If I change to two 6 volts, it allows me only one connecting stud (1 positive and 1 neg)to attach the current cables. Is it alright to stack and attach the connecting cables that are split between two studs(12 volt system) onto one stud (6 volt system)?

Thanks,

bob213

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Posted: 01/01/13 05:09pm Link  |  Print  |  Notify Moderator

That's the way mine was set up. Can't really see any way around it. Maybe someone else has some ideas but that's the way I would do it. Just make sure you keep all of your connections clean.


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belairbrian

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Posted: 01/01/13 05:12pm Link  |  Print  |  Notify Moderator

All of the positive leads must go to the same post in a double 6 volt setup.
Same for the negative leads.


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Posted: 01/01/13 05:13pm Link  |  Print  |  Notify Moderator

Make a bus bar with a 1" X 1/4" copper bar about 6" to 8" long.

Mount this bar on a a piece of Bakelite.

Drill a line of 7/32" holes in this assembly.

Remove the copper bar from the Bakelite.

Tap the holes in the copper for 1/4"-20 machine screws.

Drill out the holes in the Bakelite to 5/16" to clear the 1/4"-20 screws.

Re-assemble the assembly and mount it near your batteries.

You can make your connections to the bus bar with stainless steel screws and internal tooth lock washers.

Hint: A few "extra" holes will allow for expansion.


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Posted: 01/01/13 06:49pm Link  |  Print  |  Notify Moderator

Yes, OP, as you described is fine.


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Posted: 01/01/13 07:12pm Link  |  Print  |  Notify Moderator




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KD4UPL

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Posted: 01/01/13 08:17pm Link  |  Print  |  Notify Moderator

If you have a lot of wires and room for a buss bar that is what I would do. While a method was given for making your own they are readily available without making it yourself if you'd rather go that route. Blue Sea makes a lot of products like that aimed primarily at the marine market. West Marine, among other stores, sell their products. Car stereo shops often have buss bars, cable, lugs, and fuse holders for connected large 12v wires.
I'm an electrical contractor so I've always just used old ground and neutral bars out of breaker panels, or new ones for that matter. They work just fine for 12v.

74vette

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Posted: 01/01/13 10:02pm Link  |  Print  |  Notify Moderator

Thanks for the information. I will go with the bus bar as it seem a good way for solid connections.

smkettner

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Posted: 01/01/13 11:41pm Link  |  Print  |  Notify Moderator

A few bus bars here to compare


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RoyB

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Posted: 01/02/13 07:00am Link  |  Print  |  Notify Moderator

I use the BLUE SEA bus bars as they have the plastic protective cover that goes over the connections...

BLUE SEA SYSTEMS 2104 POWERBAR HEAVY DUTY BUS BAR


You should be able to find a short good quality battery cables with ring terminals installed. I make my own here using a hand operated 8-ton hydraulic cable crimper unit.

I have used these type of bus bars in both the POSITIVE and NEGATIVE battery terminal circuits.


sample photos from google images

Best $60 buck I ever spent since I seem to be forever making up 4AWG cables.... I always use ANCOR 4AWG battery cable and ring terminals available from ebay sources..

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