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Sasha Jevtic
11/07/05 15:14
Read: 677 times
Barrington, Il
USA


 
#103399 - RE: bonded in the panel, separate...
Responding to: Erik Malund's previous message
To elaborate, you only want to bond the neutral and ground at the service entrance. That means no bonding in subpanels, branch circuit infrastructure, or load-related equipment. Bonding at other places reduces the effectiveness of the safety ground, as it creates ground loops that enable current to flow on the safety ground. This increases the possibility that safety ground's potential will rise at the point of use (reducing its effectiveness of a safety measure), and also reduces the ground's value as a reference.

Why does this happen? It's a simple matter of current division. The old adage "electricity always follows the path of least resistance" is actually quite inaccurate. Think back to fundamentals of circuits. When you have a current that has a choice of two paths to follow (neutral and ground in this case), it does not simply choose the lower resistance path. It is true that more current flows through the lower resistance path, but a smaller amount still flows through the higher resistance path. It is a false assumption that either the safety ground or the neutral has 0 ohm resistance.

--Sasha Jevtic

List of 31 messages in thread
TopicAuthorDate
Diff between GND and Neutral.      Suresh R      11/04/05 21:26      
   Gnd and Neutral      Steve M. Taylor      11/05/05 04:04      
      UK Only      Ian Bell      11/06/05 13:58      
         Depends      Steve M. Taylor      11/06/05 14:16      
   ground vs neutral      Andy Peters      11/06/05 17:53      
      What happens if...      Vignesh Prasad      11/07/05 07:02      
         Safety ground is not for current        Sasha Jevtic      11/07/05 08:52      
            I recall      Erik Malund      11/07/05 09:16      
            (Mal)Practices      Vignesh Prasad      11/07/05 09:57      
               death by electricity      Andy Peters      11/07/05 11:29      
                  Neutral-gnd bond      Steve M. Taylor      11/07/05 13:45      
                     bonded in the panel, separate from there      Erik Malund      11/07/05 14:35      
                        RE: bonded in the panel, separate...      Sasha Jevtic      11/07/05 15:14      
                     clause: IE rules      Vignesh Prasad      11/07/05 19:41      
                        IE ?      Steve M. Taylor      11/08/05 05:31      
                           Indian Electricity      Vignesh Prasad      11/08/05 05:54      
                              Only one ?      Steve M. Taylor      11/08/05 08:12      
                                 Supplier?      Vignesh Prasad      11/08/05 08:22      
   well 'gnd' is not necessarily groun      Erik Malund      11/07/05 07:13      
      Summing up the points      Suresh R      11/07/05 10:05      
         you basically got everything wrong      Erik Malund      11/07/05 10:47      
            to Mr. Suresh      Vignesh Prasad      11/07/05 12:00      
            Reversal...      Abhishek Singh      11/07/05 19:58      
               correction      Abhishek Singh      11/08/05 05:49      
   PHASE, NEUTRAL, SAFETY EARTH,...      Kai Klaas      11/08/05 09:13      
      Difference      Steve M. Taylor      11/08/05 16:20      
         Not in india as well      Abhishek Singh      11/08/05 21:16      
            TN-S mains structure      Kai Klaas      11/09/05 06:06      
               Ours too      Steve M. Taylor      11/09/05 07:20      
                  I tried to explain this      Kai Klaas      11/09/05 15:12      
                     Hardly !      Steve M. Taylor      11/10/05 02:09      

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