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ettienne avatar image
ettienne asked

MultiPlus II fuse size

The recommended fuse size for the MultiPlus II 48/3000 is 125A. The dealer recommended only 80A fuse. I do understand that Victron is taking the 6000w / 48v to get to 125A. Does this mean that the 80A fuse will blow when the inverter caters for appliances startup demand?

Multiplus-II
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boekel avatar image
boekel answered ·

A 'slow' 80A fuse will be sufficient in most cases, 80A * 48V = 3.8kW and will not blow except if you manage to overload the inverter for long times somehow.

A 125A fuse can be used also, if the cabling is up to this.

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ettienne avatar image ettienne commented ·

Thank you for the advice Boekel. I will be using 35mm wire so I am not sure if this will handle the 125A

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boekel avatar image boekel ♦ ettienne commented ·

80A is plenty for a 3k 48V system

35mm2 and 80A also perfect, I'd go 50mm2 for 125A.

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