thanks for the info. Sorry one more question: What are you and others typically using for these boxes? Are you using off the shelf products like cabinets or bussed gutters that meet the requirements, or are these specifically made by some of the aforementioned suppliers?
No worries you can ask any question, we're all here to help each other out.
For switchboards with service end box sections I use Siemens or you can use Eaton or Square D. New York reps for Siemens, Square D and Eaton products can provide them to you. For example, I design a online diagram and then send them to the rep, then they just give you a whole submittal with everything you need.
For standalone service end box, I use some local manufacturer of service end boxes. Navtech or Electrotech makes them and some other NYC manufacturer.
You can get it off the shelf, or if space is a constraint you can ask the local manufacture to design a custom one for you but it must meet the Con-Ed spec.