• Have you tried out dark mode?! Scroll to the bottom of any page to find a sun or moon icon to turn dark mode on or off!

diy solar

diy solar

Grid-Feed System Mod?

Spritey64

New Member
Joined
Mar 1, 2025
Messages
2
Location
Bradenton, FL
Hello All:

New guy here & recent transplant from OH to FL. We had an 'self-pieced' system of one-panel in OH that I brought down with me (to charge a few sump pump batteries in an outage). The FL house we purchased had 11 solar panels already installed when we purchased it. Any excess electricity goes to the grid and a tiny offset to our ele bill. The system consists of:

LG 320NIK-AS (320W panel) x11
Enphase IQ7+ MicroInverter x11
Enphase Combiner Box (some sort of controller / mini-circuit breakers)
Feeds through a large, manual cut off switch to a dual pole 20AMP (40AMP total) breaker in the house electrical panel.


In the event of a severe grid down / hurricane tytpe scenario (we lived through 3 last year) -- I'd love to be able to charge a few batteries (deep cycle) with the roof panels. I own a Renogy LI 40AMP MPPT Solar Chg Ctr:



In the hurricane scenario I referred to -- with ALL house breakers off (esp the main) -- could I disconnect the dual pole 20AMP breaker (aka Solar Breaker) and attach my Renogy Controller or would I 'release the smoke'? Any other suggestions to accomplish this? Batteries would power a 1500W Pure Sine Wave Inverter (12V DC to 110V ) to a NOCO Battery Charger. Some of that is likely duplicated with the house equipment.

The installer that the builder picked is out of business. Most solar companies won't talk to me as they didn't install this. Catch 22. I did talk to one and they suggested my system is 'mickey mouse' and can't run the house (OK, likely more a marketing gimick) but suggested ~ $14k in batteries to attach to our existing equipment (I could add a whole house generator for that $$).

I have a very limited backgound on this. Happy to provide any additional info the best of my (limited) ability. Thanks for any comments or suggestions.

George Z
Spritey64
Brdenton, FL
 
Unfortunately, the microinverters connect to AC and don’t provide any power when the grid is down.

You _can_ do some kind of AC coupled thing, but my preference would be to rewire the system for DC (swap the microinverters for RSD boxes) and put an inverter with battery support in your basement.
 

diy solar

diy solar
Back
Top