Why the differences in + and - ground electrical systems?

Posted by Alberta Mike on May 27, 2000 at 20:44:51 from (209.115.159.119):

Although today, everything (automotive, industrial, agricultural, etc.) seems to be pretty much negative ground, I've often wondered:

1. Why did some manufacturers use + ground and others - ground?
2. Is there any advantage of one over the other?
3. Why was the - ground system the one that was eventually used?
4. Does anyone really know 100% for sure which way the electrons really 'flow' in a DC electrical circuit, either + to -, or - to +?
5. Does anyone use + ground these days on any new applications?
6. What applications today use 24V electrical systems?

Hope someone out there can clarify a few of these for me. Thanks, Mike.

Follow Ups:

• Re: Why the differences in + and - ground electrical systems? LA 23:04:35 06/04/00 (0)
• Re: Why the differences in + and - ground electrical systems? Fred Oh 05:50:54 05/29/00 (0)
• Re: Why the differences in + and - ground electrical systems? Lew Van Vliet 20:07:22 05/28/00 (0)
• Re: Why the differences in + and - ground electrical systems? ltf in nc 11:00:18 05/28/00 (0)

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