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BFL13's avatar
BFL13
Explorer II
Jun 19, 2015

Solar --Wire and Battery Fuse Size Confusion- How Big?

Can somebody please explain the math on this? I get really confused. Previously, I have seen how you have to allow 1.25 oversizing for the wires from the panel, the controller, and the wires from ...
pianotuna's avatar
pianotuna
Nomad III
Jun 19, 2015
Hi BFl13,

Fuses are not slow blow devices. Use 1.56 multiplier, or if you are under 300 watts, no fuse at all from panel to controller.

From controller to battery bank, fuse to the ampacity of the wire.

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