On 12 Jul 2008, at 3:03, Vasile Surducan wrote:

> That's not "earth" nor 'neutral". Is just a symbol representing the
> ground of the circuit (where ground = reference for measured
> voltages).
>
No it is The Earth.
see for example:-
http://www.st-andrews.ac.uk/~www_pa/Scots_Guide/info/earth/earth.htm
or  - if line wraps use:-
http://tinyurl.com/5fhmmy



George Smith

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