question

elfillderebombori avatar image
elfillderebombori asked

Wire size between busbar and battery

Hi,

In the Wiring Unlimited document is said "When wiring the system please make sure that the cross-section of the connection between the batteries and the DC distribution point equals the sum of the required cross-sections of the connections between the distribution point and the DC equipment". Does this mean if i have 5 wires of 16mm2 the section of the wire between the battery and the BusBar has to be of 16*5=80mm2?


And what is the section to connect 2 busbars?


Thanks

busbar
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Alexandra avatar image
Alexandra answered ·

@elfillderebombori

Correct. Feel free to go bigger.

And the same applies to each bus bar you install for all the DC consumers.

Also another common error is the bus bar is also the incorrect cross section.

So 80mm² cable (can you get them that size) should have an 8x10mm² bus bar minimum.... Also... Feel free to go bigger.

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