AC versus DC

s_fireworks10.jpgAn article on AC vs DC on sparked some interesting comments…

This comment especially caught my attention. In it, the commenter mdpd looks at some basic electrical calculations to show why we use high voltage AC to distribute current around the nation.

The short answer is this: We transmit electricity at high-voltages because it can travel longer distances, over thinner wires. We use AC because it can be converted to a lower voltage on-the-spot, with nothing more than a transformer.

The calculations provided in the comment will be very useful when I start looking at solar-power and/or wind power. I believe there will be some limits to what I can do with 12 volts DC.


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