Splitting Lynx Bus modules with cable

DIY
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1

Hi All,

Wondering if anyone has split their Lynx modules by using cables to extend the bus bars. I do not have space in my boat to bolt the power in, bms, and distributor together. Instead I would like to have the power in and bms bolted together and use 4/0 cable to connect to the bus bars of the distributor about 5’ away. I don’t see anything in the manuals prohibiting this and I am doing my best to satisfy all ABYC requirements. Anyone have any experience doing this? Thanks.

2

I have not done this personally but there are examples on here where people have done this to suit layout constraints. You will need to make some insulation covers over the exposed lugs.

3

I’m going to mention this, although it should go without saying.

As you haven’t supplied any electrical system details I’ll simply make the below comments which out regard to specifics.

The Lynx power rating is 1000Adc (https://www.victronenergy.com/upload/documents/Lynx_Distributor/24531-Lynx_Distributor_Manual-pdf-en.pdf).

Please ensure that should you choose to do this be mindful of your systems total current carrying potential, and that by introducing a cable, this will affect your systems ability to supply large system loads, even when using dual conductors. You’ll need to refer to the technical datasheet of your cable to establish it’s fixed and free air, Current Carrying Capacity.

4

Thanks for the responses everyone. Yes the limits of introducing the cable is a concern for sure. My installation in using a Lynx Smart BMS NG 500 amp model. For the 10 foot total DC circuit length the capacity with derating factor is 440 amps. I plan of fusing the 2 300ah 12.8v NG batteries with 200 amp fuses (in parallel). The multiplus will also be fused with a 400 amp fuse. I’d like like to avoid the additional resistance of putting a fuse in the bus bar cable if possible.

5

have a think about moving to 24v system, with lower currents, smaller cables and more tolerant of voltage drops…

6

Providing the battery output cables are suitably fused, as close as possible to the batteries this would be fine. The supply would disconnect from the system on a short / overload event at the supply source.