1. Provide suitable outlet boxes for all installed emergency lighting and exit sign equipment identifying it as suitable for connection to a metallic wiring method, or provide access to this equipemtn to verify internal bonding means. MEC 314.3
....what I did was ran MC, from a j-box went over a foot, then through a concrete block into the back of an all plastic emergency light., no internal bonding avalible. This is Michigan so MC cannot be used for grounding/bonding.
wait, wait ok I guess could open my code book every once in awhile.. I would need non metallic. How should I do this... put a j-box in the opposite side of the cement block and run... erm.. something non metallic... romex? that doesn't sound right... its an old apartment building they turned into condos.
Yup thats what I did but, Theres no EGC in the exit light. It came to me last night I should run seal tight.
I am curious on the reasoning for not being able to run MC to the plastic exit sign. The MC is bonded to the j-box its being fed from.... So anyone know the reasoning for this rule. Its certainly in the code book.
I would like to add that the MEC does allow MC cable with it's grounding means — but if there is nothing at the load end to ground DUH??? If the EM light is nonmetallic then there is no issue. Now if there is a j-box on the fixture it's worth looking at for the option of a feed thru if needed.