covers or enclosures providing the required protection shall be of a material that is compatible with the cable tray.
(E) Multiconductor Cables Rated 600 Volts or Less.
Multiconductor cables rated 600 volts or less shall be permitted to be installed in the same cable tray.
(F) Cables Rated over 600 Volts. Cables rated over 600 volts and those rated 600 volts or less installed in the same cable tray shall comply with either of the following:
(1) The cables rated over 600 volts are Type MC.
(2) The cables rated over 600 volts are separated from the cables rated 600 volts or less by a solid fixed barrier of a material compatible with the cable tray.
(G) Through Partitions and Walls. Cable trays shall be permitted to extend transversely through partitions and walls or vertically through platforms and floors in wet or dry locations where the installations, complete with in stalled cables, are made in accordance with the requirements of 300.21.
(H) Exposed and Accessible. Cable trays shall be exposed and accessible except as permitted by
392.6(G).
(I) Adequate Access. Sufficient space shall be provided and maintained about cable trays to permit adequate access for installing and maintaining the cables.
(J) Raceways, Cables, Boxes, and Conduit Bodies Sup-
(3) All cable tray sections and fittings are legibly and du- rably marked to show the cross-sectional area of metal in channel cable trays, or cable trays of one- piece construction, and the total cross-sectional area of both side rails for ladder or trough cable trays.
(4) Cable tray sections, fittings, and connected raceways are bonded in accordance with 250.96, using bolted mechanical connectors or bonding jumpers sized and installed in accordance with
250.102.
392.8 Cable Installation.
(A) Cable Splices. Cable splices made and insulated by approved methods shall be permitted to be located within a
Table 392.7(B) Metal Area Requirements for Cable Trays
Used as Equipment Grounding Conductor
Maximum Fuse
ported from Cable Tray Systems. In industrial facilities
where conditions of maintenance and supervision
Ampere Rating,
Minimum Cross-Sectional
Area of Metal a
ensure that only qualified persons service the
installation and where the cable tray systems are
Circuit Breaker
designed and installed to support the load, such
Protective Relay
Aluminum Steel Cable Trays Cable
Trays
systems shall be permitted to support raceways and
cables, and boxes and conduit bodies covered in 314.1.
For raceways terminating at the tray, a listed cable tray
clamp or adapter shall be used to securely fasten the
raceway to the cable tray system. Additional supporting
and securing of the raceway shall be in accordance with
the requirements of the appropriate raceway article.
For raceways or cables running parallel to and attached to the bottom or side of a cable tray system, fastening and supporting shall be in accordance with the requirements of the appropriate raceway or cable article.
For boxes and conduit bodies attached to the bottom or side of a cable tray system, fastening and supporting shall be in accordance with the requirements of 314.23.