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Help with wiring

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Blown284

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Joined
Dec 29, 2023
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78
Location
Pasadena, Maryland
Hi Everyone. I have a 48v battery system (parallel) and want to hook up my new to me sungold power 6000w low frequency inverter. Which leads me to my question.... what size wires should I be running to/from the lugs to the 48v battery and also what size wires should I run from the output side to power up an a/c plug that's 110v?

Thank you!
 
4/0 battery cables + fuse or breaker ( size will vary depending on wich)

The a/c side needs more detail.
A single 110/120 plug is usually only rated at 20amps max. 12ga would be fine for that single outlet (w/breaker)

Is your inverter feeding a house breaker box? You have the ability to get 50A continuously from that inverter so youd need much larger wire. At least 6ga
 
seneysolar said:
4/0 battery cables + fuse or breaker ( size will vary depending on wich)

The a/c side needs more detail.
A single 110/120 plug is usually only rated at 20amps max. 12ga would be fine for that single outlet (w/breaker)

Is your inverter feeding a house breaker box? You have the ability to get 50A continuously from that inverter so youd need much larger wire. At least 6ga
Click to expand...
Not planning to use the a/c side of this inverter right now (it can/would charge the battery). I'm treating it now as an "off grid" type setup only. So battery to inverter lugs and then wiring hot, ground and neutral to it and to 110v outlet only.
 
AF_Bob said:
I'm a solar newbie but if I understand you correctly, 6000 watts/48V = 125 Amps. Using a wire size calculator posted on this website, it shows the wire size to be 1/0 for a length up to 80 feet. Note: AWG 1/0 is NOT 1AWG.

I'd recommend waiting for a response from someone a lot more qualified than I am.
Click to expand...
Please note that I am not planning to try and use this for 6000w a/c out. Maybe 3k max for my project and this is the inverter I had on hand.
 
Take a look at a link on this site which may help determine wire sizes. It's customizable in Excel.
diysolarforum.com

YouLoveSolar Wire Size Calculator (highly customizable)

No longer switch between multiple tables: Choose the right wire for your custom allowable voltage drop while simultaneously taking into account ampacity, temperatures, and bundling. Click the orange button at the top of the screen to download the...
diysolarforum.com diysolarforum.com
 
Right, the output is what i was referring to as the a/c side.

If going from inverter directly to the single outlet, you can use 12ga, id include a 15A or 20A breaker in line.
The breakers that are built into the inverter are for the full 6000w output.

You can use smaller than 4/0 for the battery side but you need to fuse appropriately. Personally i use 4/0 on all battery connections to reduce voltage drop during high surge demands. Maybe 2/0 if you already have it. Dropping a half of a volt during high draw can make the difference of the inverter hitting low voltage cutoff then shutting down or everything holding its own... Extra cost is minimal
 
seneysolar said:
Right, the output is what i was referring to as the a/c side.

If going from inverter directly to the single outlet, you can use 12ga, id include a 15A or 20A breaker in line.
The breakers that are built into the inverter are for the full 6000w output.

You can use smaller than 4/0 for the battery side but you need to fuse appropriately. Personally i use 4/0 on all battery connections to reduce voltage drop during high surge demands. Maybe 2/0 if you already have it. Dropping a half of a volt during high draw can make the difference of the inverter hitting low voltage cutoff then shutting down or everything holding its own... Extra cost is minimal
Click to expand...
seneysolar said:
Right, the output is what i was referring to as the a/c side.

If going from inverter directly to the single outlet, you can use 12ga, id include a 15A or 20A breaker in line.
The breakers that are built into the inverter are for the full 6000w output.

You can use smaller than 4/0 for the battery side but you need to fuse appropriately. Personally i use 4/0 on all battery connections to reduce voltage drop during high surge demands. Maybe 2/0 if you already have it. Dropping a half of a volt during high draw can make the difference of the inverter hitting low voltage cutoff then shutting down or everything holding its own... Extra cost is minimal
Click to expand...
Perfect and exactly the info I was seeking. Thank you VERY much!
 
MisterSandals said:
Yes 48V parallel is unusual wording. Is your battery and configure a closely guarded secret for a reason?
Click to expand...
Yes, poor (and wrong) wording. I have 2, 48v (51.2v) batteries wired together in series, not parallel. I'm using them as backup power for the grid to compliment an Ecoflow Delta Pro setup vs. spending a lot more money on their ecosystem. No, not secretive at all :)
 
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