Glossary Of Terms

ACCESSORIES : Devices which are used to supplement the function of straight sections fittings, and include such items as dropouts, covers, conduit adapters, hold-dpwn devices dividers.

CABLE TRAY CONNECTOR : A device which joins cable tray straight sections or fittings, or both the basic types of connectors are: 1. Rigid, 2. Expansion, 3. Adjustable, 4. Reducer

CABLE TRAY FITTING : A device which is used to change the direction, elevation or size of a cable tray system.

CABLE SUPPORT : A device which provides adequate means for supporting cable tray section or fittings, or both. The basic types of cable tray supports are: 1. Cantilever bracket, 2. Trapeze, 3. Individual and suspension

CHANNEL CABLE TRAY: A prefabricated metal structure consisting of a one-piece ventilated bottom or solid bottom channel section, or both, not exceeding 6 inches in width.

LADDER CABLE TRAY : A prefabricated metal structure consisting of two longitudinal side rails connected by individual transverse members.

SOLID BOTTOM CABLE TRAY : A prefabricated metal structure consisting of a bottom with no openings within integral or separate longitudinal side rails.

ONE PIECE /UNIT CABLE TRAY: A prefabricated metal structure consisting of a one-piece solid or ventilated bottom.

HORIZONTAL CROSS : A cable tray fitting which is suitable for joining cable trays in four directions at 90-degreeintervals in the same plane.

HORIZONTAL BEND : A cable tray fitting which changes the direction in the same plane.

HORIZONTAL TEE : A cable tray fitting which is suitable for joining cable trays in three directions at 90 degree intervals in the same plane.

METALLIC CABLE TRAY SYSTEM: An assembly of cable tray straight section, fitting, and accessories that forms a rigid structural system to support cables.

REDUCER : A cable tray fitting which is suitable for joining cable trays of different widths in the same plane. A straight reducer has two symmetrical offset sides. A right-hand reducer, when viewed from the large end, has a straight side on the right. A left-hand reducer, when viewed from the large end, has a straight side on the left.

STRAIGHT SECTION : A length of cable tray which has no change in direction or size.

VENTILATED BOTTOM : A cable tray bottom having openings sufficient for the passage of air and Utilizing 75 percent or less of the plan area of the surface to support cables.

VERTICAL BEND : A cable tray fitting which changes direction to a different plane. An inside Vertical elbow changes direction upward from the horizontal plane. An outside vertical elbow Changes direction downward from the horizontal plane.

Ladder Type Cable Tray