uberflex
Member
- Location
- Spokane, WA
I've been pouring over the NEC requirements for grounding and bonding related to service transformers but have not found what I'm looking for. I'm trying to develop a good "typical" detail drawing showing the grounding and bonding requirements for a typical utility transformer which serves, say, a commercial building like a school or hospital. 15kV primary and 480/277 or 208/120 secondary. I realize each utility company has it's own standards for transformer grounding but I'm wondering if there is an overall agreed-to design which is accepted by most AHJ and utilites.
Attached is a drawing I've been working on. I'm sure there are some "issues" with the design so I'm looking for feedback from you folks on how it should look. The key here is to reference code(s) in order to cover ourselves but I'm not finding any good code references related to primary/secondary grounding and bonding.
Help!!
Attached is a drawing I've been working on. I'm sure there are some "issues" with the design so I'm looking for feedback from you folks on how it should look. The key here is to reference code(s) in order to cover ourselves but I'm not finding any good code references related to primary/secondary grounding and bonding.
Help!!