Transformer Grounding...

[xformer]

I heard a while back that a grounding bar or multi wire rated lug is to be included by manufacturer in a transformer enclosure? Any ideas on when or if that is to take place?

 

[infinity]

This is a new requirement in the 2014 NEC. The code makes no mention of this being factory installed.

450.10 Grounding.
(A) Dry-Type Transformer Enclosures. Where separate
equipment grounding conductors and supply-side bonding
jumpers are installed, a terminal bar for all grounding and
bonding conductor connections shall be secured inside the
transformer enclosure. The terminal bar shall be bonded to
the enclosure in accordance with 250.12 and shall not be
installed on or over any vented portion of the enclosure.
Exception: Where a dry-type transformer is equipped with
wire-type connections (leads), the grounding and bonding
connections shall be permitted to be connected together
using any of the methods in 250.8 and shall be bonded to
the enclosure if of metal.

 

[xformer]

This is a new requirement in the 2014 NEC. The code makes no mention of this being factory installed.

Thanks infinity...