I. General
360.1 |
Scope |
360.2 |
Definition |
It is flexible, metallic, circular in cross section, and liquidtight without a nonmetallic jacket.
360.6 |
Listing Requirements |
II. Installation
360.10 |
Uses Permitted |
This type of tubing can be used for branch circuits in dry locations, in accessible locations, concealed, and not more than nominal 1000-V systems.
360.12 |
Uses Not Permitted |
It cannot be used where subject to physical damage, in hoist-ways, storage battery rooms, hazardous locations, embedded in concrete, or directly buried in the earth. Lengths larger than 1.8 m (6 ft.) are not permitted.
360.20 |
Size |
The minimum size permitted is metric designator 16 (trade size ½) except that metric designator 12 (trade size 3/8) can be used in accordance with Section 300.22(B) and (C) or part of an approved lighting fixture assembly in accordance with Section 410.67(C) and not more than 1.8 m (6 ft.) in length. The maximum size permitted is metric designator 21 (trade size ¾).
360.22 |
Number of Conductors |
Refer to Chapter 9, Table 1, for the number of conductors permitted in metric designator 16 (trade size ½) and metric designator 21 (trade size ¾) tubing. Cables are permitted if not prohibited by cable articles. The number of cables cannot exceed what is allowed in Chapter 9, Table 1. Refer to Table 348.22 for the number of conductors permitted in metric designator 12 (trade size 3/8) tubing.
360.24 |
Bends |
If the tubing is bent infrequently after installation, refer to Table 360.24(A) in the NEC®. If the tubing is bent for installation, use Table 360.24(B) in the NEC®.
360.40 |
Boxes and Fittings |
360.56 |
Splices and Taps |
360.60 |
Grounding |
It is permitted as an equipment grounding conductor only in accordance with 250.118(B)
III. Construction Specifications
360.120 |
Marking |
Mark in accordance with 110.21.
Article 90 Introduction
General
Wiring and Protection
Wiring Methods and Materials
Equipment for General Use
Special Occupancies
Special Equipment
Special Conditions
Tables
Annex C. Conduit and Tubing Fill Tables for Conductors and Fixture Wires of the Same Size
Annex D. Examples
Annex E. Types of Construction