I have an off grid solar system all of a ssudde
I could not figure out how to edit my post. I have an off grid solar system. 2 inverters. all os a sudden power dropped. One of the inverters was wacked out, all kinds of weird readings. took it off line and everything is fine now. the bad inverter blew out every transformer in the house! I do have a log for the inverters and the good one showed a constant 240v. the bad one showed low voltages down to 210v. Any ideas what happened? maybe put some MOV’s in the transformers?
That indicates it sent a large overvoltage or surge out. The absolute best way to prevent that from happening again is to have surge protection directly coupled to the inverter output so that it protects everything downstream.
Surge suppressors on each individual device can work, but usually not anywhere near as well and often at a higher cost.