Using EGC as GEC for Transformers

[masterinbama]

I've done it in wood framed structures

 

[tom baker]

I hope it gets accepted . It is baffling the NEC's refusal to back down from the irrational importance they put on the GEC. I guess they just refuse to entertain any common sense or electrical theory. I think it was ActionDave who said the GEC is the least important conductor, but it has by far the most strict requirements.

And why does an indood transformer require a GES?

 

[electrofelon]

And why does an indood transformer require a GES?

Because if you want a grounded system you need to give one of the conductors of that new system a connection to earth. But that connection is not particularly critical or important. IF you didnt even have an intentional earth connection but still had the system bonding jumper, then the vast majority of the times the system will still end up grounded just fine. Even in the rare case that the system completely floats, i dont really see much of a practical safety issue with that.