So I'm going forward with my small scale solar project. Just a brief description: I"m going to wire my house with an extra set of receptacles - one on each floor. They will all be tied into a 1500w inverter which will be fed by (2) 75ah deep cycle batteries for a total of 150ah. I just purchased a 100 watt polycrystaline panel on ebay. Will report back on the quality when I get it. Have yet to get a charge controller, wires, etc. The whole point of the system is to provide a small amount of renewable standby power in case of outages. I don't want to get into the whole grid-tied thing at this point. Here's where I'm hung up now: 1) Since the 110v side will be a long series of receptacles (maybe over 100feet) I'm looking for data on the proper Romex wire gauge. It is only going to carry max 10 amps now. Can't find any data on length of travel. 14 ga should be fine - but true if it's over 100 feet? What if I upgrade to 20 amps. Just go with 12ga? 2) Inverter says that if it's not mounted in a vehicle, the ground should be attached to the negative battery terminal. Ok, but wouldn't a house ground be better? What about driving a separate grounding pipe? I'd think it would make sense to have a "real" ground at each of the receptacles. 3) From battery to inverter and battery to battery I'm going to use #2ga. Ok? Any and all help is appreciated.