question

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Fusing/Breaker confirmation and general system guidance

wiring-wanderbus.png

I've bought most of the stuff in this setup and now want to get fuses/breakers. But wanted to run it past those in the know before buying. Any comments on the above diagram would be welcome too; sizing of the wiring to follow when i've measured. Also does anyone have any recommendations on breakers/fuses?

MultiPlus Quattro Inverter Chargerwiring diagramfuses
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1 Answer
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seb71 answered ·

You choose the fuse based on wire cross section. The fuse protests the wire. It should blow before the current reaches the maximum current the wire can carry.


The positive wire for the SmartShunt should be connected to the battery terminal (and get the optional temperature sensor). This wire has its own fuse.


The wiring of those 4 batteries in parallel is sub-optimal. You should use busbars for batteries too and wire each battery to the busbar, with a fuse on each positive wire. The positive wires should be equal length. The negative wires should be equal length.


If you don't already have those lead-acid batteries, consider purchasing LiFePO4 instead. You can get half the capacity for similar or maybe even better performance.

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