Enduro Cable Tray Installation Guide

• The installation of Enduro Cable Tray should be made in compliance with the standards set    forth by the National Electric Code and NEMA Publications FG-1 (current issue).
• Enduro supplies made to order, pre-fabricated cable ladder tray and fittings as specified by the    purchaser.
• Always observe common safety practices when assembling tray and fittings in the field.    Assemble in well-ventilated areas as dust from field cuts can accumulate. This presents no    serious health hazard but can cause skin irritation and, if allowed to accumulate with grease    and other machining lubricants, can become abrasive. Personnel should wear safety goggles,    dust mask, coveralls or a shop coat when sawing, machining and/or sanding.
• Avoid generating excessive heat in any machining operation, as heat softens the bonding resin    in the fiberglass, resulting in a ragged rather than a clean-cut edge.
• Avoid excessive pressure when sawing, drilling, routing, etc. Use carbide-tipped drill bits and    saw blades for extended tool life.
• The use of lubricant during machining is not recommended.
• To avoid chipping of material at cut edges, secure cable tray and fittings properly during field    cutting operations.
• We recommend the use of Enduro sealant for sealing surfaces and cut edges after field cuts    are made.
• When using adhesives, be sure to prepare the surface properly before applying. Follow label    instructions carefully. A combination of mechanical fasteners and adhesives make the    strongest, most reliable connections.

WARNING! CABLE TRAYS ARE NOT DESIGNED FOR USE AS WALKWAYS
(REFERENCE: NEMA FG - 1 (current issue))

Inasmuch as fiberglass cable tray is designed as a support for power or control cables, or both; it is not intended or designed to be a walkway for personnel. The user is urged to display appropriate warnings cautioning against the use of this support as a walkway.

Straight Sections
Supports must be located so that connectors (splice joints) between horizontal runs fall between the support point and the quarter point of the span. Standard engineering practice requires that the splice joints be located where they will resist little or no bending moment. This allows the cable tray system to act as a continuous member with spans working in conjunction with one another to resist loading. When a cable tray system is installed with the splice joints located directly over the support, the previous continuous span condition is changed to one of a number of simple spans. These spans act independently of each other and excessive stress will occur at substantially less loading.

Vertical straight lengths should be supported at intervals dictated by the building structure not exceeding 24 Ft. on centers.

A support should be located 2 Ft. on each side of an expansion connection.

Horizontal Fitting Supports
Supports should be placed within 2 Ft. (.61m) of each fitting extremity, and as follows: 90 degree supports at the 45 degree point of the arc, 45 degree supports at the 22.5 degree point of the arc (except for the 12" radii), 30 degree supports at the 15 degree point of the arc (except for the 12" radii).

Vertical Fitting Supports
Vertical fittings at the top runs should be supported at each end. Fittings at the bottom of runs should be supported at the top of the fitting, and within 2 Ft. (.61m) of the lower extremity of the fitting.

Horizontal Tee Supports
Supports should be placed within 2 Ft. (.61m) of each of the three openings connected to other cable tray items for 12" (305mm) radius. On all other radii, at least one support should also be placed under each side rail of the tee.

Reducer Fitting Supports
Straight reducer and right/left hand reducer fittings should be supported within 2 Ft. (.61m) of each fitting extremity.

Horizontal Cross Supports
Supports should be placed within 2 Ft. (.61m) of the four openings connected to other cable tray items for the 12" (305mm) radius. On all other radii, at least one support should also be placed under each side rail of the cross.

Vertical Tee Supports
Vertical tee fittings should be supported within 2 Ft. (.61m) of each fitting extremity.