Bonding secondary side of the transformer

[santhukumar069]

we have been following a method for our transformers and power supplies that is, we run the secondary side of these components from neutral to a separate ground stud.

my question is can I run the secondary side of these components to the actual ground bar? if not, is there a reason for not doing that? I do not find anything in the NEC aswell.

 

[augie47]

Are you asking if it's permissible to use a ground bar in the transformer for connecting XO, GEC, SSBJ, etc,
That is allowable as long as the ground bar is not mounted on a vented panel {450.10(A)}

 

[santhukumar069]

Augie thank you for your reply.

we are using Square D transformers and the max will be 2kVA. do I still need to connect the secondary side of the transformer to separate the ground screw? or can I run it directly to the ground bar?

the ground bar is mounted on the back panel.

 

[tom baker]

Where ever you bond the XO is where the GEC is connected, that may help with your decision.
I have wired a lot of SqD 5 kva transformers and they were all wire leads, so I did the bonding in the disconnect.

 

[santhukumar069]

we bond the XO to the ground bar. can I bond the earth to the ground bar as well?

 

[tom baker]

Yes. The same location for both
Are you sure this is a 2Kva transformer?

 

[santhukumar069]

Yes, sir, the range we use on our control panel starts from 100VA to 2000VA.

mostly, we use 500, 750VA all the time.