No neutral wire to source

[Learning Always]

This is a 3 phase 240v high leg incoming feed. From a ct cabinet- 400 amp disco- 200 amp disco- distribution block box- then to 200 amp panel. I was there to look at adding a receptacle and lights to a new office that is being added to an already 12+ office location that is the second floor of a manufacturing plant. The neutral wire from the 200 amp panel lands on a distribution block bonded to the cabinet and stops there. There isn't a neutral wire ran back to the source. The unbalanced current is flowing on the seal-tite and a few amps on the bare ground wire. Even tho "it's been like this forever and everything works fine." I feel it is a saftey concern that needs to be addressed asap before I would be willing to do any other modifications. Do others agree or am I blowing it out of proportion?

 

[infinity]

I would not touch that until a complete evaluation of all of the violations is made and corrected.

 

[jaggedben]

That's pretty awful. I would not want the liability of being the last to work on it.

 

[kwired]

I would not touch that until a complete evaluation of all of the violations is made and corrected.

If you only opened the load center to do whatever work you did you may never know what is going on upstream.

That said placing neutral conductors on the left neutral bus and EGC's on the right neutral bus does not make them "separated" in the typical QO load center and you probably should still have addressed that issue while you were there.

 

[zooby]

Does the "high leg" just get left behind and not taken where it is not needed? Maybe I am looking at this wrong...