conductors of different transformers in same enclosures

[JGClark]

I'm looking for the article in NEC that states you can't have conductors from different services in the same enclosures.
Here's the situation:
Handholes, poles and other metal enclosures contain conductors fed from different transformers. How can a low impedance path via EGC and neutral bonding be provided for both sets of conductors (on the load side) without paralleling the neutrals from different transformers?
300.3(C)(1) says they can occupy the same enclosures. What am I missing?

 

[augie47]

I may be overlooking something, but I don't see a problem.
Each transformer should have proper grounding and bonding to the grounding electrode system and conduit system. If both transformers are in the same building or at the same location the electrode systems should be common or connected. Your conduit or equipment grounding conductor should have a return path thru that bonding system.

 

[JGClark]

Thanks for the reply.
This is for street lighting and traffic signals and the transformers can be blocks apart. The streetlight conductors are basically feeders that branch off and go to many different locations. The disconnects for each service can be located far apart as well.
Is this still ok?