Ground question XFMR

[garrisonm1]

New drawings submitted and my question is why is a ground not included between the transformer and 480volt gear. I drew in a green line where i feel the ground is needed. Thoughts/reasons why engineer left it out? Thank you View attachment Ground question.pdf

 

[infinity]

That would be the supply side bonding jumper (SSBJ) and is required. It could be a metal raceway.

 

[garrisonm1]

Great, so if these conductors were in EMT or Ridgid that would be sufficient. Can you supply me an article number.

 

[roger]

250.118

Roger

 

[garrisonm1]

Roger 250.118 is equipment grounding conductors, does this relate to the supply side bonding jumper? Appreciate all the info

 

[roger]

I should have also mentioned the last sentence of 250.30(A)(2)

Roger