diy solar

diy solar

Rewiring the house to only use the grid for emergency backup

There is no 240v service in the house. 120v only.
Good to know.
Can you please post a picture of your main panel?
I'll bet many of us are curious to see a 120VAC service entrance.
 
I have an old brick house in Central America with typical nasty wiring. I considered simply running a parallel system for the solar but would rather rip out the old and start fresh. I'd like it to go through the same panel but use breakers to isolate one from the other. I'm thinking something needs replacing I can isolate the solar and use the grid and when finished isolate the grid and revert to solar. This way if I move I can have a good reliable grid system for the new buyer.

Is this accomplished simply by using two, say, 100 amp breakers leading into the box? The grid here is 100a and the inverter, a Growatt 3k is less than that. Please excuse my ignorance. I never progressed in wiring more than connecting a stereo 30 years ago.
oi, that topic or scenario came up on our discord quite a few times.
wrote a little project post about that:


most easy way is a Offgrid-inverter or a hybred-inverter (depending if you want to inject to grid or not)
tldr: with a offgridinverter you can run a solar island with grid connection without touching any old electrics.
 
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