Re: Re: Re: 6 volt to 12 volt system

Posted by Dave on January 25, 2001 at 19:05:10 from (158.252.164.155):

In Reply to: Re: Re: 6 volt to 12 volt system posted by John on January 23, 2001 at 22:24:28:

I like giving bean counter a hard time any chance I can, but there are physical reasons why 12V are better than 6V. It has to do with Ohm's Law. Power = Voltage X Current, this means you need twice as much current for a 6V system to get the same power as 12V. Keep that thought -- Twice the current. The next thing to remember is Voltage Drop = Current X Resistance, this means that with a 6V system you will have twice the voltage drop at all the resistance points (connections, cables,etc.). With only 6V to start with your electrical system has to be kept in very good condition. It is not as robust as a 12V system. Electrical Power Plants transmit power at very high voltage (thus lower current) for this same reason -- less power is loss in transmission.

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