NEC 2014 Section 250.64(D)(1)

[hhsting]

Sketch attach shows two diagrams A and B. Both show from multiple service disconnects GEC tap to gnd bus bar.


However, Diagram A shows from ground bus bar:
a.one GEC to steel,
b. another GEC to water pipe,
c.another GEC to rods
d. bonding Jumper to inter system bonding terminal.

While Diagram B shows from gnd bus bar:
a.one bonding jumper to intersystem bonding terminal
b. from gnd bus bar one grounding electrode conductor to steel and bonding jumper from steel to pipe and another bonding jumper from steel to rods.

Which of the two diagrams: Diagram A or Diagram B is in compliance with NEC 2014 section 250.64(D)(1)?

 

[hhsting]

Sketch attach shows two diagrams A and B. Both show from multiple service disconnects GEC tap to gnd bus bar.


However, Diagram A shows from ground bus bar:
a.one GEC to steel,
b. another GEC to water pipe,
c.another GEC to rods
d. bonding Jumper to inter system bonding terminal.

While Diagram B shows from gnd bus bar:
a.one bonding jumper to intersystem bonding terminal
b. from gnd bus bar one grounding electrode conductor to steel and bonding jumper from steel to pipe and another bonding jumper from steel to rods.

Which of the two diagrams: Diagram A or Diagram B is in compliance with NEC 2014 section 250.64(D)(1)?

Please if anyone can help I researched 250.64(D) but I am stuck on this.


Sent from my iPhone using Tapatalk

 

[augie47]

Just an observation on my part but since there have been 58 views and no replies added to the fact that you had about that many posts (58_) on grounding in the last few months, I think you have pretty well burnt everyone out on grounding,
Might be time to wad that napkin up or maybe get one of Mike's books on grounding..

 

[roger]

I agree with Augie. As I've said before, you should probably talk to one of the senior engineers in the firm you work for for assistance.

Roger