Timeline for How much solar can I get, and when/why would it require digging up the street?
Current License: CC BY-SA 4.0
6 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Sep 10, 2020 at 23:22 | comment | added | ThreePhaseEel | @TonyStewartSunnyskyguyEE75 -- the 120% rule has nothing to do with protecting the utility wiring and everything to do with protecting the panel's busbars from getting overloaded, because the main breaker can no longer be the "gatekeeper" of all electricity that gets to the busbars | |
| Sep 10, 2020 at 5:17 | comment | added | JRaef | As I said, don't get into the why's, it ot going to be satisfactory... | |
| Sep 10, 2020 at 4:20 | comment | added | Tony Stewart EE75 | If true, this rule does not compute. The DT can supply a lot more than what the 100A service panel is limited to and any external GTI current reduces any current from the DT, not add to it. GTI’s programmed to pf=1 by default so the current never adds to DT supplied (+) current, it’s always generating so that excess current is -ve and panel is limited by design , so it doesn’t change the load capacity. I suspect the 120% rule means you can supply up to 120% to the grid yet only up to 100% to the residence limited by the internal busbars and breakers. | |
| Sep 10, 2020 at 2:39 | comment | added | ThreePhaseEel | @user31708 -- most 200A panels can be downbreakered to use a 100A (backfed, if worse comes to worse) main breaker, so you're right, there is no reason to upgrade the service lateral to 200A just to get fatter panel busses | |
| Sep 10, 2020 at 0:56 | comment | added | user31708 | The first guy did say we would need to upgrade the panel to more than 100A, and that part makes sense to me. But the first guy didn't say anything about digging up the street. Why would the wires to the utility need to be upgraded to 200A just because the panel is upgraded to 200A? | |
| Sep 10, 2020 at 0:12 | history | answered | JRaef | CC BY-SA 4.0 |