"Jeff" napisal w wiadomosci
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On 20/07/2012 23:47, BillyBobMarley wrote:


Not to be a smart ass but weren't a lot of the old British cars
equipped with a positive ground? What's up with that?


Nothing at all, but -ve ground seemed to take over in the '70's. I seem to
recall that +ve ground did have some advantages for galvanic corrosion.

In a circuit one part is protected and the second is attacked. So the
polarity is not the key issue.

Edison in his DC supply used the 3 wire system. +110V, -110V and neutral.
I do not know what was preffered in the 2 wire.

It seems to me that in overhead wires should be the excess of electrons. In
a storm weather the bulbs shine for free.

Now almost all DC supply systems are like that in the modern car. In the
"live" wire is the deficit of electrons.
S*