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frige wiring
Posted: Sat Dec 15, 2007 7:50 pm
by pro093
i,v got a 110 waeco and wondering what size cable to run to the back of the wagon to run the frige i'v all ready got a dual battery under the
bonnet
Posted: Sat Dec 15, 2007 9:21 pm
by drivesafe
Hi pro093, you need at least 6mm auto cable, both positive and negative to get a decent voltage at the fridge.
The diagram below will give you an idea of how to set it up properly.
The cable in the diagram, run from the battery to the rear is 8B&S (7.9mm2 ) but is designed to run two power sockets at the same time and if you only want one powered socket, the 6mm auto will do the job.
Posted: Sat Dec 15, 2007 10:33 pm
by pro093
thanks heaps for that. very handy info.
cheers
Posted: Mon Dec 17, 2007 1:26 pm
by blacklion
another thing with wireing is a bit of overkill never hurts either
Posted: Wed Jan 30, 2008 3:41 am
by franku
In my experience, 6mm auto cable is not neccesarily large enough.
6mm2 cable is what is minimum.
Auto cable is different in that auto cable is measured as diameter including the plastic coating.
6mm2 is the cross section of actual wire.
Your fridge will be more efficient using 6mm2. Also, 6mm2 may not be enough - it depends on the length of the run between the battery and the fridge.
How long are you running the cable?
When working out the correct size, you need to take into account the length of both the positive and the negative - a common mistake people make when sizing electrical cable.
If you get it wrong and make it too small, you will get voltage drop which will effectively reduce the usable cpacity of your battery significantly.