Wire size and ferrules for Phoenix Inverter 12/1200?

DIY
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1

I just bought a 12/1200 Pheonix Inverter and I am trying to hook it up to my battery.

The manual recommends 25mm^2 cable for less than 1.5m.

According to the following source, the smallest AWG with at least that cross section is 3 AWG. Does that sound right?

Am I supposed to just stick the bare wire into the terminal? I know Victron recommends ferrules for a lot of its products, but I cannot find ferrule crimpers for that size of wire. Additionally, I’m not sure what shape ferrule I should be using in this case.

2

For more information, I was planning on using these cables:

https://www.homedepot.com/p/WindyNation-2-Gauge-5-ft-Black-5-ft-Red-Welding-Cable-Kit-Includes-10-Pieces-of-Cable-Lugs-and-3-ft-Heat-Shrink-Tubing-2G-5B5R-10LG38-HS/319810806

3

The datasheet also has the AWG number:
grafik

Max is 35mm²/AWG2 so 25mm² or AWG3 should fit good.

PS: The link to the wire isn’t working for me.

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4

Thanks, this is very helpful!

That’s odd about the link. This is the same product on Amazon: Amazon.com: 2 Gauge 2 AWG 5 Feet Black + 5 Feet Red Welding Battery Pure Copper Flexible Cable Wire - Car, Inverter, RV, Solar : Tools & Home Improvement

5

The main sticking point for me now is whether I need to crimp this with a ferrule or not. I can’t find any 2 AWG ferrule crimpers, and I’m unsure what shape to use here. The bottom has a sort of v-channel to it.

IMG_20250127_091500214
IMG_20250127_0915002142338×1315 352 KB

I have heard from other people that they just used the bare wire, I’m not sure if this is recommended for this product or not.

6

No ferrule, bare wire only. The welding wire linked is good fine-strand wire, you’ll be good with that. Don’t forget to fuse as close to the battery as possible!

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7

Thank you!