Re: attachments
jioman,
The code reference that Charlie cited is from the current code.
In my area, there is a history of phone and cable areal drops being hung on electrical masts. There are still a lot of these installations "as built" that were installed and either approved, or allowed to remain, 'cause the AHJ was not part of the process. (Think of a house built in 1968, that had the phone originally attached to the mast, when no one regulated it, and then, when cable came in the '80s, the cable co. just did it, and no inspector came to the site).
Off the top of my head I can't recall how many code cycles back the requirement in 230.28 was introduced. I believe it has only been a few, back to the early '90s - late '80s.
Bottom line, past practice is not allowed now, by the NEC, unless modified by local ordinance.