how did you decide what stays on and how do you test it safely for grid tie backup?

[TitanMechonis]

I finally have a home backup setup that is grid tied and I love the peace of mind, but I’m realizing I’m still fuzzy on what should actually stay on during an outage. The first time our power flickered last week, I did the dumb thing and started mentally adding watts in my head like it was a math test, while my family just wanted the WiFi and a couple lights.

How did you decide your priorities in real life. Like fridge, lights, internet, maybe one room AC, and what did you intentionally leave off. Also what’s the safest way you tested it the first time without doing anything sketchy. Did you do a planned test with a transfer setup, flip only certain breakers, or use monitoring to confirm the loads before you trust it.

 

[King_Troad]

I started with the smallest backup panel I could live with, then expanded after a couple clean tests. The safest test for me was turning off the main to simulate grid loss and confirming the system picked up the loads correctly. Then I added one breaker at a time to see what actually moved the needle.

 

[Alan]

For grid tie backup, safest first test is a planned outage test using the system’s normal transfer method, not any DIY backfeed tricks. Start with light loads only, verify the system transitions cleanly, then add loads one at a time while watching inverter output and battery current. If your setup has an app or CT monitoring, that is your best friend.