The fact that the 5' rule cannot be maintained has me stumped @ the moment. I would vote for a 'Hot Tub' room & associated wiring here over a 'Habitable ' room's requirements as the new usage would seem to dictate that level of compliance, but that's just MO...
3. Could the space above this ceiling contain a fixture (standard, metal) that would shine down through a plastic lens in the ceiling?
(1) Elevation. Luminaires (lighting fixtures), except as covered in 680.43(B)(2), lighting outlets, and ceiling-suspended (paddle) fans located over the spa or hot tub or within 1.5 m (5 ft) from the inside walls of the spa or hot tub shall comply with the clearances specified in (a), (b), and (c) above the maximum water level.
(a) Without GFCI. Where no GFCI protection is provided, the mounting height shall be not less than 3.7 m (12 ft).
(b) With GFCI. Where GFCI protection is provided, the mounting height shall be permitted to be not less than 2.3 m (7 ft 6 in.).
(c) Below 2.3 m (7 ft 6 in.). Luminaires (lighting fixtures) meeting the requirements of item (1) or (2) and protected by a ground-fault circuit interrupter shall be permitted to be installed less than 2.3 m (7 ft 6 in.) over a spa or hot tub. (1) Recessed luminaires (fixtures) with a glass or plastic lens, nonmetallic or electrically isolated metal trim, and suitable for use in damp locations
(2) Surface-mounted luminaires (fixtures) with a glass or plastic globe, a nonmetallic body, or a metallic body isolated from contact, and suitable for use in damp locations
I don't get the 'isolation' bit here, especially given a mettalic cieling grid and the bonding already required....
2. The room is built with metal studs. And it will have a suspended (T-bar) ceiling at about a 7 foot height (from floor). What type of bonding would you consider as the minimum required and to what lengths would you go?
(4) All metal surfaces that are within 1.5 m (5 ft) of the inside walls of the spa or hot tub and that are not separated from the spa or hot tub area by a permanent barrier
I quess that means up
too... would the lighting circuit run there be considered a bond if made to the cieling grid?
[This message has been edited by sparky (edited 02-13-2002).]