Sorry Ray but I must disagree with your theory. The potential difference is the very same as to whether it’s in the negative or positive lead. I think that those instructors should be going back to school.
For example is you’re drawing say 10 amps in a circuit, it won’t make a damn bit of difference as to whether you key the positive or negative side as you will still be keying 10 amps of current.
Unless you come up with something concrete with your theory, I must decline and not buy it.
Like they say “an amp of current is exactly the same as to whether you measure it in the positive or negative lead” and the voltage diffence is the same as to whether it’s in the positive or negative lead.
Thanks Fern, but you miss the point.
The difference is that the switch is just supplying a ground and there is no potential, or need to do work.
Hard to explain, but that's the way my instructors put it,
Think of it as electric welding. Welding is just a dead short that you control, power (voltage) going to ground creating an arc, across a gap, which melts one metal into another to form a bond (weld). That is the maximum definition of potential, being used in a good way.
With power going into a switch, and then on to work and then ground, you create an arc, just as the switch is about to contact the terminal, it jumps across the gap, burning the contacts.
And I can testify that I never replaced any thing with contact points in it on Japanese cars. Not counting the early days of points in Dist.
Not being an engineer, that's the way I understand it and practice seems to bear it out.
What say you Rich? Yes or no?
On Sun, Mar 6, 2016 at 5:30 PM, Fern Rivard <crc@xxxxxxxxxxxx> wrote:
Ray Jones. Y'all come on down an see us. Ya hear?
Posted by: "Fern Rivard" <crc@xxxxxxxxxxxx>
To send a message to this group, send an email to:
To unsubscribe from this group, send an email to bob@xxxxxxxxxxxxx or
go to https://groups.yahoo.com/neo/groups/all/manage/edit
For list server instructions, go to http://www.chrysler300club.com/yahoolist/inst.htm
For archives go to http://www.forwardlook.net/300-archive/search.htm#querylang