Cable sizing of multiplus 12/1600/70 compact

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goon326 asked Oct 17, '23

Cable sizing of multiplus 12/1600/70 compact

Dear users,

Again a question from me, I think I settled for the following setup:

- Multiplus 12/1600/70 with temperature sensor for battery

- BMV-712 smart with bluetooth

- 75 - 15 MPPT with bluetooth (300W solar panels)

- Orion TR DC-DC 12-12/30 with bluetooth

- 200ah lithium battery with 200A BMS (not from victron)

- Cerbo GX S

My question: Are the 35 mm2 cables connected to (and provided with) the multiplus 12/1600/70 sufficient for the full capacity for the DC/AC converter and the peak capacity of the multiplus?

I am going to use my multiplus for charging and for my 1000W airfryer, most of the time it will be used once a day for 15-30 minutes.

Kind regards,

goon326

BMV Battery Monitor MPPT SmartSolar VictronConnect orion-tr smart multiplus ve.bus

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Answer 1 · 2023-10-17T09:47:00Z

cardy01 answered · Oct 17, 2023 at 09:47 AM

The manual says to use 50mm2 ......

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goon326 commented · Oct 17, 2023 at 10:16 AM

Why do they provide 35 mm2 with the product? That is weird right?

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Answer 2 · 2023-10-17T10:31:18Z

cardy01 answered · Oct 17, 2023 at 10:31 AM

I have a 12 1200 50 which needs 35mm2

You might want to look at the discharge rates of your batteries - your air fryer will pull around 90A on the DC side whilst running - I don't have lithium just AGM GEL but my batteries wouldn't support 90A for 15 minutes.

This link helped me https://community.victronenergy.com/questions/4454/peak-power-of-victron-inverters.html

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