SolarEdge 7.6kW inverter supports 2 strings. Tesla 7.6kW inverter supports 4 strings. Perhaps Tesla doubled the strings and cut the operating voltage in half? Probably not but it's hard to say since they didn't publish this spec so it can't really be determined the minimum number of panels needed per string. Unless this spec is published and I'm just not seeing it?If enough panels on a string are shaded you will have no output from that string if the total string voltage is below the inverter minimum. So you may want to consider that when figuring out how to run your strings. 8 strings for 48 panels seems like a bad idea because on a 6 panel you may only need to lose one panel to have the whole string drop out.