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Fuses on a dual battery setup

For all things Electrical.

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Posts: 10
Joined: Wed Nov 01, 2006 10:48 pm

Fuses on a dual battery setup

Post by Mugs »

Hey all,
Today I fitted a Redarc isolator thingy SBI12. Pretty easy as I already had a dual battery setup but with one of those large rotary switch things. The batterys were conected to the switch whith some heavy cable, like what runs to the starter motor. This is good but a pain to work with!
The instructions with the redarc state I should use a 100 maxi fuse in line with each battery + terminal but I cant find a fuse holder that would fit on my cables. What do you guys recomend? Does it realy need to be fused? The previous switch was not.
Any help/advice would be appreciated.
Cheeers
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Post by RRturboD »

If you want to fit fuses, have a look at the fuses etc that sound systems employ, they have large fuse blocks and circuit breakers.
Michael T
Aussie '88 RR Tdi300 Auto
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Location: Brisbane

Post by AussieGQ »

I dont bother fitting fuses when I do dual battery fitments. If you run the cable in such a way that it wont be running on anything that can cut through the insulation, it will be fine. The same goes for the isolator, if you mount it where nothing is going to touch it,it will also be fine.
Honestly if something bad enough happens(a crash?) to cause the cable to be shorted, I really dont think a fuse is going to help.
Thats my thoughts.
Shane

91 LWB GQ TD42, Recaro Seats, Tait T2020 UHF, Tait TM8255 Trunk, 3" Lift and 33's. Turbo coming soon :D
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Post by Mugs »

Cheers for the input guys, I'll double check the wiring is not in any danger and leave it at that.
Thanks again!
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Post by Oscars »

check then cable size of ya new unit, if its not starter cable make sure ur not starting through the second battery.
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Post by Mugs »

Oscars, I wired all battery conections up with very fat starter cable. Is that right? I'm not sure of the mm's but had to get the auto lecy to fit the ends as I didnt have the giant crimping machine!
Just got to look for a 10A push switch for the overide.
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Post by Oscars »

cool, i pulled apart a pararna dual system the othe week to find crapy 6 mm cable inside huge thick insulation which looked at first like starter cable. only reason i asked.
sounds good
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Post by V8 Middy »

I had my dual batteries done by ARB cos I was too lazy to do it myself... not a single fuse in sight. Not something I'm entirely happy with considering the engine bay has burnt out once already... avoid that one, it sux!!!

You could try one of these:

http://www.jaycar.com.au/productView.as ... &SUBCATID=

I don't know what amp fuses are available tho...
73 Series Middy Cruiser 308 VN V8 OME 2in Susp lift 2in Body lift 35in Pro Comp X-Terrains
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