Re: [TCML] line feed/generator feed neutral/grnd ?

[Sfxneon@xxxxxxx]

Hi David,
 
Even though the white and green wires terminate at the same place  in the 
main panel, they have two very different functions. They just both happen  to be 
earth grounded, so they are connected to the same terminal but still have  
different functions. The white, or neutral wire is a current carrying conductor  
meant to complete the power circuit, while the green, or grounding wire's  
purpose is safety, by providing a lower resistance path to ground than you  are.
 
Normally, the green wire carries NO current...unless there is a  leakage path 
or a ground fault, such as the "hot" wire coming in contact with  the case or 
chassis of a piece of equipment. Then the fault current will be  conducted to 
earth ground through the green wire, instead of your body if you  happen to 
touch it. The neutral wire can actually be quite a few volts above  ground if 
the wire is long and the load high, especially during a fault  condition. The 
green wire is also a reference to ground for GFCI's and provides  a dedicated 
wire straight back to earth ground for maximum protection from  electrocution. 
 
The only place the white and green should be connected together is at the  
main disconnect panel, and the white should never be used for both a neutral  
wire and a grounding wire if the grounding wire is not present. 
 
Tony Greer

In a message dated 8/28/2008 12:02:52 P.M. Central  Daylight Time, 
drieben@xxxxxxxxxxx writes:

I'm not sure that I can adequately answer your question but  one
thing that I have noticed is that the green or bare wire ground and  
the neutral in all utility electrical hookups terminate to one and the  
same ground buss bar in the fuse/breaker box and finally to the 
ground  rod at the electric meter. I still don't think I quite understand  
all  that I know about this ;^) Even 240 volt circuits to dryer and range
outlets  now have 4 wires instead of 3 to incorporate a seperate
ground AND a neutral,  which both hook up to the same identical
ground buss bar in the breaker  box.
 



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