So, next I want to show you: About the startup sequence: First, turn on the battery switch, second turn on the battery switch of the single phase inverter, third turn on the solar panel switch, fourth, turn on the output, and finally turn on the load; Important. So, next I want to show you: About the startup sequence: First, turn on the battery switch, second turn on the battery switch of the single phase inverter, third turn on the solar panel switch, fourth, turn on the output, and finally turn on the load; Important. Damage may occur if any attempt is made to start the inverter under solar, generator or utility power, without the presence of a battery supply. Below follows a generic procedure that should work for most inverters manufactured by Voltronics like Mecer, Axpert, The Sun Pays, Voltex and others as. In the off-grid solar system, the correct startup sequence and shutdown sequence of the inverter are very important. Wrong operation may cause damage to the inverter. (Battery isolator) Switch off the PV Circuit trip switch (labelled Inverter AC supply above it) in the Solar PV Electrical Distribution board and /or at the Main Distribution Board (Main Fuse Board). Please ensure your system is Completely Shut Down before performing. Go to your inverter. Step 1: Locate your meterbox or switchboard and locate the "main switch inverter supply" and turn that to the ON position. Was this article helpful?.