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Cable Tray Systems

Horizontales
A cable tray system may be affected by this type of expansion and contraction, which must be taken into account during installation
These must provide strength and working load capabilities sufficient to meet the load requirement of the cable tray wiring system
The standard classes of cable trays, as related to their maximum design loads and to the associated design support spacing based on a simple beam span requirement, are designated in accordance with the _____/Span Class Designation Table
These types of fittings shall have a radius of 12, 24, 26, or 48 inches
This material offers high-yield strength and high creep strength, at high ambient temperatures
These are used to change the size or direction of the cable tray
This affects the appearance of an installation, but it is not a structural issue
This type of cable tray is a fabricated structure consisting of two longitudinal side rails connected by individual transverse members (rungs)
This type of cable tray is a prefabricated metal structure consisting of a one-piece ventilated or solid-bottom channel section, or both, not exceeding six inches in width
Verticales
Generally, straight sections of these shall be 12 or 24 feet
Also known as non-ventillated cable tray is a solid-bottom or non-ventilated cable tray is a fabricated structure consisting of a bottom without ventilation openings within integral or separate longitudinal side rails.
Generally, the heights of these shall be 3 5∕8, 4, 5, 6, 7, and occasionally 8 inches
Generally, these shall be 6, 9, 12, 18, 24, 30, and 36 inches
This type of cable tray is a fabricated structure consisting of integral or separate longitudinal rails and a bottom with openings sufficient for the passage of air and utilizing 75% or less of the plan area of the surface to support cables where the maximum open spacings between cable support surfaces of transverse elements do not exceed four inches in the direction parallel to the tray side rails.
are available for all classes of tray and should be installed where falling objects may damage cables or where a vertical tray run is accessible by pedestrian or vehicular traffic
Cable trays fabricated of this are often used for their high strength-to-weight ratio, superior corrosion resistance in certain environments, and ease of installation
The most suitable ________ and finish for an application will depend on cost, the potential for corrosion, and other electrical considerations
Cable trays fabricated from this are used for their high strength and low cost