Gentlemen I have a researcher coming out tomorrow and I seek some basic information to guide him. Thank you in advance. He needs to run a small, but complex drip system (about 8 valves) with a a 120 volt computer controller. The closest AC power to this site is about 400 ft. away with somewhat difficult access. Last year he tried a 12v inverter system with deep cycle battery and solar back up. He claimed it was problematic. He wants 120v run out there. All said and done, that will cost upwards of $2,000. What about running a low voltage line out there (400') to the inverter??? Is this do-able? Voltage drop? Most inverters need 10 to 16 volts input. Again, thanks for sharing (I hope) your professional advice and wisdom.