All-in-one to electrical panel - wire size and type

[Derka181]

I have a off grid 48v system . I have a sp6548 All-in-one. The all-in-ones inverter recommends to run 4 awg wire from the inverter to the electrical panel. I have some extra 4 awg stranded pure copper wire. I’m just wondering if it’s ok to use this wire? Or should I find/ buy some 4/2 wire loomex?

 

[iamrich]

I mixed this unit up with the 120/240v version that I have. Please ignore my comments

 

[Mattb4]

The answer depends on the type of wire you have and also if you have any permit/inspection requirements.

You are aware that you need to have a way to isolate your electrical panel from the grid?

 

[BentleyJ]

If the 4 AWG you have is stranded THHN/THWN building wire that will work fine but should be put in EMT conduit. If you wish to use a 4 conductor all in one cable something like SOOW would be a good choice.

EDIT: Flex conduit may acceptable vs. EMT depending on inspection requirements and preference.

 

[littleharbor2]

If the terminals will accept it then use it. 10awg sounds pretty light.

 

[iamrich]

If the terminals will accept it then use it. 10awg sounds pretty light.

And this is where I stick my foot in my mouth and slink away. I thought this was the 120/240v version. This is 120v only so 10awg is way too light...

 

[Derka181]

The answer depends on the type of wire you have and also if you have any permit/inspection requirements.

You are aware that you need to have a way to isolate your electrical panel from the grid?

It’s off grid and I need no inspection

 

[Lt.Dan]

6500w output at 120/240 gives you about 27a on each leg which is within the specs of 10AWG copper, at least over a short distance. Mine is about 3-4 feet. I ended up using 8awg because that is what I had on hand, but MPP recommends 10AWG for the LVX6048.

View attachment 157274

He has a single 6500w inverter at 120v. Thats 6500/120 = 54a. NOT 27a.

4ga is recommended, but I wasn't able to fit 4ga without a ferrule and I just ran 6ga for ease. It still carried the current fine.

 

[Mattb4]

It’s off grid and I need no inspection

Than use what ever would handle the load.

 

[Derka181]

6500w output at 120/240 gives you about 27a on each leg which is within the specs of 10AWG copper, at least over a short distance. Mine is about 3-4 feet. I ended up using 8awg because that is what I had on hand, but MPP recommends 10AWG for the LVX6048.

View attachment 157274

I I think its 4 awg because can handle 60amps . 6500w %110 = 59amps.

 

[iamrich]

I I think its 4 awg because can handle 60amps . 6500w %110 = 59amps.

Yep... I figured that out while the replies where coming... I edited my post accordingly...