410.11 noted Steve66, especially the wording in the 1st sentence.....
410.11 Temperature Limit of Conductors in Outlet Boxes.
Luminaires (fixtures) shall be of such construction or installed so that the conductors in outlet boxes shall not be subjected to temperatures greater than that for which the conductors are rated.
Branch-circuit wiring, other than 2-wire or multiwire branch circuits supplying power to luminaires (fixtures) connected together, shall not be passed through an outlet box that is an integral part of a luminaire (fixture) unless the luminaire (fixture) is identified for through-wiring.
FPN:See 410.32 for wiring supplying power to fixtures connected together.
Branch-circuit conductors run to a lighting outlet box are not permitted to be subjected to higher temperatures than those temperatures for which they are rated. For example, conductors are rated 75°C and are to supply a ceiling outlet box for the connection of a surface-mounted luminaire or attached outlet box of a recessed luminaire. The design and installation of the luminaire should be such that the heat of the lamps does not subject the conductors to a greater temperature than 75°C. These types of luminaire are listed by Underwriters Laboratories Inc. based on a heat-contributing factor of the supply conductors of not more than the maximum permitted lamp wattage of the luminaire.
Exhibit 410.2 illustrates recessed luminaires listed by Underwriters Laboratories Inc. for one set of supply conductors, and Exhibit 410.3 illustrates luminaires listed for a feed-through installation.
so by virtue of the small print disclaimer, the majority of
luminaires marketed are done so unethically.
[This message has been edited by sparky (edited 06-26-2003).]
