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rossco85 asked

Cable & Fuse sizing advice

Hi all.


Can someone advise if I am considering the correct cable size and fusing for my set up please.

I have:

3X160W solar

Lynx distributor

Smart shunt

MPPT 100/50

Orion 12 12 30

Multiplus 12v 1600

2X 100aH lifepo4 in parallel


Can you help with cable selection and fuse ratings..

1) battery links then to shunt - / ANL fuse+ / sw and lynx D <2m total

70mm2 or 50mm2 - 300A ANL or ... fuse


2) lynx D to multiplus <1m

70mm or 50mm - mega fuse size ?


3) lynx to 12v fuse box <3m

16mm2 100A mega fuse


4) lynx to Orion 12 12 30 and to Engine battery <7m

16mm2 or 25mm2 60A mega fuse


5) Solar panels to mppt to lynx < 5m

6mm2 mega fuse ?


I don’t want to over do the cable size but I want it to be right.

The inverter may be in constant use for the 3 way fridge when not using gas - otherwise intermittent use for charging drones or microwave etc

It is a 28 year old Hymer so when it was original it would have only been and EB and LB via a relay for charging when driving and not a great deal of load. This relay will be bypassed when using the Orion.

Thank you in advance

victron
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