Re: Why positive ground?

Posted by RAB on November 02, 2004 at 23:49:02 from (195.93.34.11):

In Reply to: Why positive ground? posted by Rosy on November 02, 2004 at 17:36:25:

The problem of + and - goes right back to the discovery of electricity - or at least the synthesis of electrical charge and discharge devices. They did, in hind-sight, get it wrong. They decided that the current flowed from positive to ground (or negative). We now know that current (electrical flow) generally flows from negative towards positve. That was because the electron had not been discovered as a sub-atomic particle until later.
Theories that less corrosion takes place with negative earth were put forward as reason to change to a common system in the "60s. The rest of the posts are probably all correct, so unless someone looks up the archives for the minutes of the meetings which took place (in the automotive industry?) leading to the negative ground decision, we will not know why for certain.
I would think it was the adoption of the alternator which required a negative earth was the deciding factor due to lobbying by the generator manufacturers.
Regards, RAB

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