Battery Cables..

Joined
Jun 26, 2022
Posts
176
Likes collected
64
Location
Mallorca, Spain
Funster No
89,512
MH
Benimar sport 340
Exp
Benimar sport 340
I have 3 x 200ah Lifepo4 batteries fitted in place. The cables will pass through a 30mm bulkhead (in front of the battery terminals), where I have mounted a Victron MultiPlus-II 12/3000/120-32 230V And a Victron Lynx Distributor.

I have ordered:
1 x Blue Sea 5502 Fuse Block Class T 225-400 Amp.

2 x Blue Sea Systems Class T Fuses

1 x Blue Sea Systems 3000 HD-Series Heavy Duty On-Off Battery Switch. 600A 32vdc.

I have the Victron 1000A Smart Shunt. And a Victron Smart Battery Sense, in use now.

I would like to confirm that its correct to use:

70mm² cable to connect the batteries together and 95mm² to connect from the negative of the last battery to the smart shunt and then to the Lynx.

95mm² to connect from the first battery + to the T fuse, then the main switch, then the Lynx positive.

Also because these 95mm²cables will be very short, I have been thinking about using some copper bar (Busbar), from the smart shunt to the through bulkhead negative connector. And, from the T Fuse to the switch and from the switch to the through bulkhead positive connector.

The Smart Shunt, T Fuse holder and the Battery Switch will be physically mounted to the bulkhead and then flexible 95mm² cable to the batteries.

If you agree with this option, what size bar would you suggest?

Also, what size round bar should I use, for the through bulkhead fittings? I plan to get these made from copper round bar, drilled and threaded, with threaded stud screwed completely through it and protruding both ends, one for the battery cables or copper bar and the other directly into the Lynx connections lugs.

Any ideas would be gratefully received.
 

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