Connecting to standard breaker box

[Matt Young]

I'm building a completely off grid home starting this July and I am considering using the MPP All-In-One systems. I am wondering if I got 2 of the 5KW/48V systems and connected them to a standard breaker box I could wire the house like a traditional home. If I took the 120V Positive from each MPP and attach it like you would grid power and then the neutrals together, that would give me the 240V service. It's a small house and will have extremely efficient appliances. Would this work, or am I missing something about them? I will have plenty of solar cells and wind turbine as well as 1000AH of batteries in 48V.

Thanks,

Matt

PS, I plan to video the entire build and do a use study over the first year as this is a test case for an entire housing development I plan to do if this works.

 

[John Frum]

The 120VAC legs would need to be synchronised half a beat apart.

 

[John Frum]

Will this build be code compliant?
And if yes, which code?

 

[Matt Young]

Will this build be code compliant?
And if yes, which code?

No Codes or inspection, seriously off-off-grid

 

[John Frum]

I suggest you follow best practices and make er safe.
Including proper grounding.

 

[John Frum]

Oh and have a propane generator maintained and ready for a "rainy day".

 

[Will Prowse]

Yes it will work perfectly. Just ensure that they are in "split-phase operation". This requires two data cables to connect the two inverters together. Check out the manual, it is super easy to do (attached below).

So for two MPP inverters in parallel, you will have: 2 grounds, 2 neutrals, Line 1, Line 2, and they will supply the panel.

And yes, do it to code.

 

[Matt Young]

Yes it will work perfectly. Just ensure that they are in "split-phase operation". This requires two data cables to connect the two inverters together. Check out the manual, it is super easy to do (attached below).

So for two MPP inverters in parallel, you will have: 2 grounds, 2 neutrals, Line 1, Line 2, and they will supply the panel.

And yes, do it to code.

View attachment 16524View attachment 16525View attachment 16526

I do everything to code or better, this project is just in a location where there is no authority to report to. Thanks for the information, I will keep you posted on the progress and lots of video and pics to come in the next 6 months.

 

[Matt Young]

I do everything to code or better, this project is just in a location where there is no authority to report to. Thanks for the information, I will keep you posted on the progress and lots of video and pics to come in the next 6 months.

Also, does the back up generator split into the two separate units?

 

[John Frum]

Also, does the back up generator split into the two separate units?

Yes if it's 120/240VAC