Here is a situation that I see everyday in NY State - where I inspect. We do not follow the NEC for 1&2 family dwellings with services 400 amps and smaller, we follow the NY State Residential Building Code, of which the bulk of the electrical requirements come from chapters 33-42. We also follow the Energy Conservation Construction Code. Both of these documents have requirements regarding the lighting requirements as to "penatrating the building envelope".
The jist of what I am trying to say is, that without the documents, it is hard to tell from one person to another what the actual requirements are. Purchase the documents and carry them in the truck. When you need them, they are right there.
Pierre
