TROF Typical Specifications
By Specifying the NEMA class designation, you will use the simplest, clearest, and most complete method of specification available and automatically incorporate support span in feet, working (allowable) load in pounds per linear foot, a safety factor of 1.5, a concentrated load (if present), and all other design, manufacturing and test standards including electrical continuity. Specification - Aluminum Atkore Trof Cable Trof type tray shall be manufactured by a company regularly engaged in the manufacture of metal cable trays and shall be a member of NEMA. Trays shall conform to NEMA Metal Cable Tray Standard Publication VE-1 (latest issue). 1. Cable Trof shall be NEMA Classification 12B of the widths indicated. 2. Material shall be aluminum alloy with side rails of 6063 and bottoms of 5052 alloy. 3. Finish shall be natural. 4. Inside load depth to be NEMA Standard 3. 5. Fittings shall be 12" radius for control cables and 24" radius for power cables. (This must be commensurate with the cable manufacturer's recommended minimum bending radius.) 6. All top level trays in stacks and single runs to have raised peaked aluminum ventilated covers with heavy duty hold down clamps every 3'-0". 7. Install expansion connectors, expansion guides, and hold down clamps per NEMA Standard VE-1. 8. Where slopes or horizontal bends of trays are not at the Standard NEMA angles use adjustable connectors. If the angle is too great for cable bending radius, use combinations of fitting and adjustable connectors.
All you need to add is inside depth, desired radius of fittings (to protect from cable damage), metal and finish. You can add accessory information pursuant to your project. Here is a typical specification for an outdoor tray system where the working (allowable) load has been determined to be approximately 75 pounds per foot on support spans of 12'-0". 9. Separate all cables of different voltages in the same tray using the manufacturer’s standard barriers and barrier hold down system. 10. The cable Trof system will be used as an equipment grounding conductor. 11. To save space, fittings shall have no tangents. To facilitate field installation, use one pair of universal type connector plates for rigid joints. 12. Cable Trof shall be three (3) piece construction with corrugated bottoms having 1" wide ribs on 2" centers arc welded to 3 1" high side rails. Ventilating holes, 1 1/16" diameter on 1" centers, shall be provided across valleys of the corrugations. Welds shall be MIG-arc type with approximately 1" diameter fused zone for rigidity to resist the rigors of shipping, installation, and service. 13. Trays shall be Atkore Trof as manufactured by Atkore.
TROF - Specifications
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