[JABURKHOLDER]

Like previously stated... a good inverter will switch when shore power is detected. My thought process on this is turn the inverter off when connected to shore power. If you leave in on instead, as soon as you disconnect shore power you are pulling power out of your battery(s). Without some external source to keep the battery(s) charged, they will just die. I don't follow the logic of a previous poster having never turned off his inverter in over a year. What needs to run continuously for that long and how does the battery(s) not die ? Anyway, I only turn mine on when I need it.