under the fill.
(4) In any hazardous (classified) location except as permitted by other articles in this Code.
(5) For the support of luminaires or other equipment except conduit bodies no larger than the largest trade size of the tubing.
(6) Where practicable, dissimilar metals in contact any- where in the system shall be avoided to eliminate the possibility of galvanic action.
Table 392.3(A) Wiring Methods
FPN: For further information on cable trays, see ANSI/NEMA-VE 1-1998, Metal Cable Tray Systems; NEMA-VE 2-1996, Metal Cable Tray Installation Guide- lines; and NEMA-FG-1998, Nonmetallic Cable Tray Systems.
360.1 Scope. This article covers the use, installation, and construction specifications for flexible metallic tubing (FMT) and associated fittings.
360.2 Definition.
limited to provide these minimum clearances, such as at meters, panelboards, outlets, and switch points, the individual conductors shall be enclosed in flexible nonmetallic tubing, which shall be continuous in length between the last support and the enclosure or terminal point.
(C) Clearance from Piping, Exposed Conductors, and So Forth. Conductors shall comply with 398.19 for clearances from other exposed conductors, piping, and so forth.
additional protection is provided
332.1 Scope. This article covers the use, installation, and construction specifications for mineral-insulated, metal-sheathed cable, Type MI.
332.2 Definition.
the Installation of Sprinkler Systems, on all floors, ENT shall be permitted to be used within walls, floors, and ceilings, exposed or concealed, in buildings exceeding three floors abovegrade.
FPN: A finish rating is established for assemblies containing combustible (wood) supports. The finish rating is defined as the time at which the wood stud or wood joist reaches an average temperature rise of
121°C (250°F) or an individual temperature of 163°C
(325°F) as measured on the plane of the wood nearest
396.1 Scope. This article covers the use, installation, and construction specifications for messenger- supported wiring.
396.2 Definition.
Messenger-Supported Wiring. An exposed wiring support system using a messenger wire to support insulated conductors by any one of the following:
(1) A messenger with rings and saddles for conductor support
334.1 Scope. This article covers the use, installation, and construction specifications of nonmetallic-sheathed cable.
334.2 Definitions.
installed in wet locations shall be suitable for such locations.
physical damage. Where open conductors cross ceiling joists and wall studs and are exposed to physical damage, they shall be protected by one of the following methods:
(1) Guard strips not less than 25 mm (1 in.) nominal in thickness and at least as high as the insulating supports, placed on each side of and close to the wiring.
(2) A substantial running board at least 13 mm O/2 in.)
thick in back of the conductors with side
