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Old 10-10-11, 10:40 PM   #13
Ryland
Master EcoRenovator
 
Join Date: Mar 2009
Location: Western Wisconsin.
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Some of the most efficient solar electric systems you can install use micro inverters on the back of the solar panels to convert the low voltage DC to high voltage AC, the higher the voltage the less line loss you have and the smaller the wire has to be, and with AC power you can use a transformer to bump the voltage up even higher to go longer distances, like is done with high tension power lines, there are losses in transformers too but there is greater losses in low voltage wiring.
RV's use DC wiring because, like has already been stated, it's cheap and RV's are small so the wire runs are short, but the light at the far end of the RV is going to be dimmer then the light close to the battery.
My electric car runs off 48v DC and if you touch the two ends of the pack with bare hands it will not kill you but you will feel it and you can get burned if you are not careful, I'd like to have 72v in my car but that is boardering on what can kill you.
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