Reno:
Let me delve into this a little deeper.
I have had numerous situations where modifications, or repairs had to be performed on buss, both in switchgear, and distribution buss.
The ECs called in a fabricator who operates a UL approved shop to fabricate and/or install what had to be done. Yes, when it was completed a UL document was presented and a 'field label' was put on the equipment.
This one shop also makes custom switchgear, buss tap boxes, and POCO approved CT cabinets.
Yes, the cost is premium, but the results are 100% no issue. Overall it usually is cheaper then a "do-over".
Think about the litigious society we are all living in, and everyone having to 'watch their backs'; doing our jobs 'by the book' is the way to go.
