I’m piecing together my first PV system and I hit a snag with respect to sizing my inverter (high frequency, 24 VDC to 120VAC). Based on my research, the inverter needs to handle a surge in power from an inductive motor that surges, or inrushes, for a fraction of a second during startup. I understand that this is why the inverters will be listed as a certain wattage with a higher rating for surges, usually double the rated capacity. I have a central vacuum cleaner that I’d like to include in my system. The motor is an 11 amp, 120 volt. I tried getting the inrush current from the manufacturer but to no avail. I also don't know what NEMA rating it is (motors are assigned a letter rating which tells you about the watts per hp, or something along those lines, sorry, not an expert). I also read that the best way to know for sure is to use an ammeter that can record/retain the maximum current. Since this vacuum motor plugs into an outlet, I also need an AC circuit splitter in order for the clamp-on meter to read the live wire. Before I invest in both the meter and splitter, I have two questions. 1. Is there any way to calculate the inrush current? 2. If not, any recommendations as far as the meter and splitter? Thanks in advance for any help.