Solar panel with grid tie question?

i have some questions about connecting these together. I will probably build my own panels which will either contain 36 polys or somethiing similar with monos. In theory this would produce 18 volts with an average of about 60 watts during full sun per hour, correct? The inverter is a 300 watt inverter with... show more i have some questions about connecting these together. I will probably build my own panels which will either contain 36 polys or somethiing similar with monos. In theory this would produce 18 volts with an average of about 60 watts during full sun per hour, correct? The inverter is a 300 watt inverter with operations between 14 to 28 volts. So my question is this...Could I hook up 5 panels to 1 grid tie inverter? And will the volts remain at 18 with all these hooked up? I noticed some inverters that only operate at 28 or more volts. I am starting small and adding as I go. Or is there a better way to go by starting small?
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