Hi there, I have just purchased a Victron Multiplus ii 48/8000, Cerbo Gx, 2x Smart solar 150/60 tr, 4x Pylontech US5000 and i would really appreciate if anyone can tell me how to correctly size and fuse the cables and how.. also deciding between a lynx distributor or power in. The plan is to add mo…

Welcome! I would highly recommend reading through the Wiring Unlimited manual: https://www.victronenergy.com/media/pg/The_Wiring_Unlimited_book/en/index-en.html

Hey @JamieLee take two Lynx Distributor. Check out my system thread about EF3 fuses and open-source fuse monitoring by Thomas. I would connect each battery to one Lynx port. You could parallel two batteries. You would need at least two positive and two negative wires from battery to Lynx, as the …

I did not check handbook for cable and fuse size. Please check it yourself. Yes, each MP2 8k has two cables to Lynx, as one 95qmm would not be smooth. MP2 - 2x50qm - Lynx A - 95qmm - Lynx B - 35qm - Battery Lynx A has: 2x 50qmm 100A for 1 MP2 8k 2x 25qmm 80A? For 2 SmartMPPT 150/60 Lynx B has: …

[image] BjoernK: MP2 - 2x50qm MP2 - 2x50qm for my Mp2… i dont understand this and if i can see a physical diagram i would .. i am sorry but my brain just doesnt register this information in a plan or execution .. im not retarded i just need to visualize what is being said to me before i under…

Yes two positive and two negative 50qmm cables from 1 MP2 to Lynx to get 100qmm in sum. 4x 25qmm or 4x 35qmm from 4 batteries is also 100-160qmm in sum. A MP2 5K needs 1x70qmm. A MP2 8k need more and 95qmm are difficult to circle around corners and into cable trays.

i feel so dumb right now and i apologise.. two positiives and two negatives are from the dc side (batteries) not from the inverter right ?

Yes :wink: You can see this also in the data sheet: dc 4x M8 bolts

Pls check handbook for fuse size. For the SmartMPPT 150/60 this might be 80A. Please check if 80A Mega fuses for 48V are available. My SmartMPPT 150/45 need 60A max which is not available as Mega fuse.

Victron Multiplus 48/8000

Q&A and troubleshooting

JamieLee 21 November 2025 23:09 9

ahhh gotcha. sorry.. i only have one MP2 8K.. but the website says 2x the cables.. what i should of asked is which cables. from inverter to ditributor or battery

sorry

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Victron Multiplus 48/8000

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