It feels so wrong, wire sizing thoughts

[Watts Happening]

Using a Growatt 48v SPF 3000TL LVM with an SOK 48v battery. Manual calls for a set of 4awg wires from battery to inverter.

What I happen to have laying around is Arctic Ultraflex from Polar Wire in both 1/0 and 6awg. I don’t think it’s all that realistic to get the 1/0 in there. That said, the 6awg from Polar Wire is rated at 115a at 86F and 106a at 104F, the inverter manual only calls for 82a.

Total wire length will be under 3 feet.

All seems to be in spec, but darn if that doesn’t “feel” wrong.

Polar Wire in 6awg here: https://store.polarwire.com/arctic-ultraflex-6ga-blu/

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Screenshot from Inverter specs here:

 

[Risky Rob]

Feelings, nothing more than feelings....

 

[cs1234]

Sounds good to me, but people like thick wire. Put a fuse or breaker on it at an amount you feel will keep the cable from melting and go with it. One of the benefits to using a 48v system is lower wire gauges ..

 

[John Frum]

What is the insulation rating on the Arctic Ultraflex?

 

[Bobert]

I used #2 guage on my 3500w AIO ( it was what I had and the largest guage that would fit) and at max capacity of the AIO the wire is cold to the touch.

 

[Watts Happening]

Crisis averted, apparently 1/0 does fit. Now I can have overkill wire as we all tend to desire!