Cable Tray Installation 211215

1. LEARNING AND DEVELOPMENT PROGRAM SADARA ISOCYANATES PROJECT (TDI/PMDI ) © 2015 SENDAN INTERNATIONAL COMPANY LIMITED

2. Never Stop Learning Because Life Never Stop Teaching CABLE TRAY What is Cable Tray Types of Cable Tray Types of Material of Cable tray Installation Procedure of Cable Tray Support Procedure of Cable tray Demonstration AREAS OF TRAINING

3. CABLE TRAY Never Stop Learning Because Life Never Stop Teaching What is a Cable Tray System? As per the National Electrical Code, a cable tray system is "a unit or assembly of units or sections and associated fittings forming a rigid structural system used to securely fasten or support cables and raceways." What does this mean? Cable trays support cable the way that roadway bridges support traffic. A bridge is a structure that provides safe passage for traffic across open spans. Cable tray is the bridge that allows for safe transport of wires across open spans. Therefore , think of cable tray as the structural component of a building's electrical system .

4. CABLE TRAY Never Stop Learning Because Life Never Stop Teaching What standards / guidelines are available for cable tray systems? 1. The National Electrical Code publishes the standards for all types of electrical applications. Articles 318, 250, and 800 cover various aspects of cable tray systems. 2 NEMA, ( National Electrical Manufacturers Association), is an association comprised of the major cable tray manufacturers in the industry. This committee has published three documents to date: NEMA VE1, FG1 and VE2.  NEMA VE1 Covers general cable tray definitions, manufacturing standards, performance standards, test standards, and application information.  NEMA FG1 Addresses the standards for fiberglass cable tray systems. NEMA VE2 Covers cable tray installation guideline which covers receiving and unloading material , storage of material, and general installation practices

5. CABLE TRAY Never Stop Learning Because Life Never Stop Teaching What types of Cable Tray are available? Ladder Tray Solid Bottom Cable Tray Trough ( ventilated ) Cable Tray Channel ( perforated )Cable Tray Wire Mesh Cable Tray Single Rail Cable Tray

6. CABLE TRAY Never Stop Learning Because Life Never Stop Teaching 1 .    Ladder Cable Tray: 1.1.    Solid side rail protection and system strength with smooth radius fittings and a wide selection of materials and finishes. 1.2 maximum strength for long span applications standard widths of 150, 300, 450, 600, 750, and 900 millimeters 1.3 standard depths of 50, 75, 100, 125 and 150 millimeters 1.4standard lengths of 3 to 6 meters 1.5rung spacing of 150, 225, 300, and 450 millimeters 1.6Ladder cable tray is generally used in applications with intermediate to long support spans, 3meters to 6 meters . Figure 1-1 I-Beam Figure 1-2 Channel Flange In Figure 1-2 Channel Flange Out

7. CABLE TRAY Never Stop Learning Because Life Never Stop Teaching 2.   Solid Bottom Cable Tray: 2.1. Non ventilated continuous support for delicate cables with added cable protection available in metallic and fiberglass. 2.2. Solid bottom metallic with solid metal covers for non plenum rated cable in environmental air areas 2.3.  standard widths of 150, 300, 450, 600, 750, and 900 millimeters 2.4. standard depths of 75, 100, 125, and 150 inches 2.5. standard lengths of 3, 6, meters Solid Bottom cable tray is generally used for minimal heat generating Electrical or telecommunication applications with short to intermediate support spans of 1.5 meter to 3 meter.

8. CABLE TRAY Never Stop Learning Because Life Never Stop Teaching Figure 2-1 Pan Flange In Figure 1-2 Pan Flange Out Figure 2-3 Corrugated Bottom Figure 2-4 Solid Sheet on Top of Ladder Rung Example of Solid Bottom Cable Tray

9. CABLE TRAY Never Stop Learning Because Life Never Stop Teaching 3.    Trough Cable Tray: 3.1.    Moderate ventilation with added cable support frequency and with the bottom configuration providing cable support every 4 inches. Available in metal and nonmetallic materials. 3.2.    standard widths of 150, 300, 450, 600, 750, 900 millimeters 3.3.     standard depths of 75, 100, 125, and 150 millimeters 3.4.   standard lengths of , 3000, 6000 millimeters 3.5.    fixed rung spacing of 100 millimeters on center Trough cable tray is generally used for moderate heat generating applications with short to intermediate support spans of 0.6, 3, 6 meters .

10. CABLE TRAY Never Stop Learning Because Life Never Stop Teaching Figure 3-1 Corrugated Bottom with Holes Figure 3-2 Pan with Louvers Figure 3-3 Tray with Close Rung Spacing

11. CABLE TRAY Never Stop Learning Because Life Never Stop Teaching 4.   Channel Cable Tray: 4.1 an economical support for cable drops and branch cable runs from the backbone cable tray system. 4.2. standard widths of 75, 100, and 150 millimeters in metal systems and up to 200 millimeters in nonmetallic systems. 4.3. standard depths of 30 to 50 millimeters in metal systems and 25, 30, 40, and 50 millimeters in nonmetallic systems 4.4. standard length of 3, 4, and 6 meters Channel cable tray is used for installations with limited numbers of tray cable when conduit is undesirable. Support frequency with short to medium support spans of 1.5 to 3 meters.

12. CABLE TRAY Never Stop Learning Because Life Never Stop Teaching Figure 4-Ventilated Bottom Figure 5- 2 Solid Bottom

13. CABLE TRAY Never Stop Learning Because Life Never Stop Teaching 5. Wire Mesh Cable Tray: 5.1.    A job site, field adaptable support system primarily for low voltage, telecommunication and fiber optic cables. These systems are typically steel wire mesh, zinc plated. 5.2.    standard widths of 25, 50, 150, 200, 300, 400, 450, 500, and 600 millimeters 5.3.     standard depths of 25, 50, and 100 millimeters 5.4.   standard length of about 3 meter Wire Mesh tray is generally used for telecommunication and fiber optic applications and are installed on short support spans, 1.2 to 2.4 meter .

14. CABLE TRAY Never Stop Learning Because Life Never Stop Teaching Figure 5-1 Wire Mesh Cable Tray Example of Wire Mesh Cable Tray

15. CABLE TRAY Never Stop Learning Because Life Never Stop Teaching 6. Single Rail Cable Tray: 6.1. These aluminum systems are the fastest systems to install and provide the maximum freedom fort cable to enter and exit the system. 6.2. Single hung or wall mounted systems in single or multiple tiers. Standard widths are 6, 9, 12, 18, and 24 inches. 6.3. Standard depths are 3, 4, and 6 inches. 6.4. Standard lengths are 10 and 12 feet. Single Rail Cable Tray is generally used for low voltage and power cables installations where maximum cable freedom, side fill, and speed to install are factors.

16. CABLE TRAY Never Stop Learning Because Life Never Stop Teaching Example of Wire Mesh Cable Tray Figure 6.1 Centre Rail Cable Tray Figure 6.2 Single Tier Wall Mount Figure 6.3 Multi Tier Wall Mount

17. CABLE TRAY Never Stop Learning Because Life Never Stop Teaching What materials available for the various cable tray systems? 1.   Steel (Min. Yield = 33KSI) (35 KSI for Stainless) 1.1. Plain: hot rolled pickled and oiled steel. 1.2.   Pre-Galvanized : mill galvanized steel 1.3.   Hot Dip Galvanized After Fabrication1.4. Stainless Steel: type 304 or 316L fully annealed stainless steel 2.   Aluminum ( Min.Yield = 23 KSI) 2.1.   6063-T6 or 5052-H32 alloy per ASTM B209 3.   Fiber Reinforced Plastic (FRP) 3.1. Polyester and Vinyl Ester resin systems available 3.2. Meet ASTM E-84 smoke density rating; Polyester 680, Vinyl Ester1025

18. CABLE TRAY Never Stop Learning Because Life Never Stop Teaching What configurations are available? 1. Straight sections are available to route cables in a horizontal or vertical plane. 2. Fittings are available to route cables in various directions in either the horizontal or vertical planes. Typical examples of fittings include elbows, tees, crosses, and risers. Each of these fittings are available in various radii and bend angles. 3. Covers are accessories and shouldn't be in here unless splices etc. are included.

19. CABLE TRAY Never Stop Learning Because Life Never Stop Teaching BREAK

20. CABLE TRAY Never Stop Learning Because Life Never Stop Teaching Cable Tray Installation Step Common Tools for Cable Tray installation Marking of Cable Tray Cutting & Fabrication of Cable Tray Drilling of Cable Tray Support Installation for Cable Tray Cable Tray Fitting & Accessories Fixing of Cable Tray

21. CABLE TRAY Never Stop Learning Because Life Never Stop Teaching Common Tools for Installation The following tools are commonly used for installation of cable tray: 1. Metal cutting saw 2. Touch-up material 3. Screwdriver 3. Drill with bits 4. File 5.Open-end wrench 6. Nylon cord or laser 7. Sealant for cut edges(fiberglass) 8. Cutting saw (for fiberglass), carbide- or diamond-tipped 9. Leveling device 10. Tape measure 11. Square 12. C clamp 13. Torque wrench 14. Ratchet wrench 15 Offset bolt cutters (wire mesh) 16 Dust mask (fiberglass) 17 Appropriate safety equipment

22. CABLE TRAY Never Stop Learning Because Life Never Stop Teaching Marking of Cable Tray Using a square that reaches across the width of the cable tray, gauge off the edge of one side rail and mark both flanges. Mark the web of the rail. Marking can be done with a scribe, marking pen, or a pencil.

23. CABLE TRAY Never Stop Learning Because Life Never Stop Teaching Cutting & Fabrication of Cable Tray The cutting can be made using a hand-held hack saw, a circular saw with carbide-tip or diamond-dusted blade, a hand-held band saw, offset bolt cutters, or a high-speed grinder (for wire mesh only). It is important to get a square cut to ensure a good splice connection. Cable tray manufacturers offer jigs and other devices to aid in field cutting. After cutting, smooth the cut edges to remove any burrs. Fiberglass material should be cut with a circular saw with a carbide tip or a diamond dusted blade.

24. CABLE TRAY Never Stop Learning Because Life Never Stop Teaching Cable Tray Bends & Offset Fabrication Tables

25. CABLE TRAY Never Stop Learning Because Life Never Stop Teaching Cutting with Hand-Held Hack Saw Cutting with Bolt Cutters examples of Cable Tray Cutting Channel Tray cutting

26. CABLE TRAY Never Stop Learning Because Life Never Stop Teaching Drilling Holes for splice plates must be drilled in field-cut cable trays. The most common method of locating the hole positions is to use a splice plate as a template. Drill jigs are also available. A short piece of side rail that is punched with the standard factory hole pattern can be bolted to the splice plate to serve as a stop that rests against the end of the field-cut side rail Clamp the splice plate to the rail, and drill through the splice plate holes and the side rail . The correct drill size depends on the hardware supplied with the cable tray. Match the holes that exist in the cable tray. After drilling, remove burrs. Drilling with Drill Jigs Drilling with Punched Side Rail Drilling with Clamp and Side Rail

27. CABLE TRAY Never Stop Learning Because Life Never Stop Teaching Cable Tray Supports. 1.  Trapeze Support (Single or Multi-tier) 2.  Hanger rod clamps, "J" hangers 3.  Center Hung Support 4.  Wall Support 5.  Under floor Support 6.   Single Channel Cable Tray Hanger 7. Double Channel Cable Tray Hanger

28. CABLE TRAY Never Stop Learning Because Life Never Stop Teaching 1. Trapeze Type 1.1. Thread nuts onto threaded rod approximately 50 mm (2 in) above the desired location for the bottom of the cable tray. 1.2. Slide on square washers followed by cross member and second set of square washers. 1.3.Thread the second set of nuts onto the threaded rod. 1.4. Move the cross member so that the top surface is located where the bottom of the cable tray run will be located. 1.5. Move the second set of nuts up the threaded rod until the cross member is reached and held in place. 1.6. Make sure the cross member is level, then move the first set of nuts down the threaded rod until the

29. CABLE TRAY Never Stop Learning Because Life Never Stop Teaching Figure 1-1 Strut Support Figure 1-2 Angle Iron Support Figure 1.3 C-Channel Support Figure 1.4 Strut (Exploded View) examples of Trapeze Type Supports

30. CABLE TRAY Never Stop Learning Because Life Never Stop Teaching 2. Hanger Rod Clamp 2.1. Thread nuts onto threaded rod approximately 225 mm (9 in) above the desired location for the bottom of the cable tray. 2.2. Place a clamp around the side rail of the cable tray. 2.3. Lift the entire cable tray section onto the threaded rod, running the threaded rod through the holes in the clamps. 2.4. Thread a second set of nuts onto threaded rod, moving them up until the bottom of the cable tray reaches the desired location. 2.5. Move the first set of nuts down the threaded rod and secure clamps in place.

31. CABLE TRAY Never Stop Learning Because Life Never Stop Teaching examples of Hanger Rod Clamp Supports 2.1. Single Cable Tray Hanger 2.3. Double Cable Tray Hanger 1.2 Single Cable Tray Hanger 1.4. Double Cable Tray Hanger

32. CABLE TRAY Never Stop Learning Because Life Never Stop Teaching 3. Center Hung Support 3.1 .Thread nut onto threaded rod approximately 225 mm (9 in) above the desired location for the bottom of the cable tray. 3.2. Slide washer and support onto the threaded rod with upright tube going through the center of the cable tray section needing support. 3.3 . Place a square washer on the threaded rod and thread on the second nut. 3.4 . Move cross member so its top surface is located at the place where the bottom 3.5 . the cable tray run will be located. 3.6 . Move the second nut up the threaded rod until it reaches the cross member and holds it in place. 3.7 . Move the first nut down the threaded rod until it secures the cross member in place. In most cases, hold-down/guide clamps may be mounted on either the inside or outside of the cable tray. When installed on the inside of the cable tray, the clamp and/or attaching hardware should not extend into the cable pathway.

33. CABLE TRAY Never Stop Learning Because Life Never Stop Teaching Figure 3.1 Center Hangar Support Figure 3.2 Center Hangar Support Exemple of 3.1 Center Hangar Support

34. CABLE TRAY Never Stop Learning Because Life Never Stop Teaching 4. Wall and Cantilever Brackets Secure the brackets to the structure or wall making sure they are level and aligned with each other. . Figure 4-1 Single Strut Cantilever Bracket Figure 4-2 Gusset Cantilever Bracket Figure 4-4 Single-Rail Direct Wall Mount Figure 4-3 Fiberglass Cantilever Bracket 0

35. CABLE TRAY Never Stop Learning Because Life Never Stop Teaching 5. Floor and Roof Installations 5.1. Cable tray should not be laid directly on the floor or roof. 5.2. It should be mounted far enough off the floor or roof to allow the cables to exit through the bottom of the cable tray. 5.3. If a strut is used for this purpose, mount the strut directly to the floor or roof and attach the cable tray to the strut using hold-down clamps and/or guide clamps. figure 5-2 Under floor Support Attached to Floor Pedestals Figure 5-1 Under Floor Strut-Type Support

36. CABLE TRAY Never Stop Learning Because Life Never Stop Teaching 6. Single & Double Channel Cable Tray Hanger 6.1. Thread nut onto threaded rod to the height required. 6.2. Place hanger on the threaded rod and follow with one nut. 6.3. Run nut up the threaded rod until the bottom of the hanger is at the desired height 6.4. Run top nut down to tighten. 6.5. Place channel on the hanger, and secure in place as necessary. Figure 6-1 Single Channel Hanger Figure 6-2 Double Channel Hangar

37. CABLE TRAY Never Stop Learning Because Life Never Stop Teaching CABLE TRAY FITTINGS & ACCESSORIES INSTALLATION Horizontal Elbow Support Supports for horizontal cable tray fittings should be placed within 600 mm (2 ft) of each fitting extremity, and as follows: 90° supports at the 45° point of arc. 60° supports at the 30° point of arc. 45° supports at the 22-1/2° point of arc (except for the 300 mm (12 in) radii). 30° supports at the 15° point of arc (except for the 300 mm (12 in) radii).

38. CABLE TRAY Never Stop Learning Because Life Never Stop Teaching Horizontal Tee Support Place horizontal tee supports within 600 mm (2 ft) of each of the three openings connected to other cable tray items for the 300 mm (12 in) radius. On all other radii, at least one additional support should be placed under each side rail at the horizontal tee, preferably as shown .

39. CABLE TRAY Never Stop Learning Because Life Never Stop Teaching Horizontal Cross Support Place horizontal cross support within 600 mm (2 ft) of each of the four openings connected to other cable tray items for the 300 mm (12 in) radius. On all other radii, at least one additional support should be placed under each side rail of the horizontal cross, preferably as shown.

40. CABLE TRAY Never Stop Learning Because Life Never Stop Teaching Reducer Support Place reducer supports within 600 mm (2 ft) of each fitting extremity. 3.5.1.6 Vertical Cable Tray Elbows Vertical cable tray elbows at the top of runs should be supported at end. At the bottom of runs, they should be supported at the top of the elbow and within 600 mm(2 ft) of the lower extremity of the elbows.

41. CABLE TRAY Never Stop Learning Because Life Never Stop Teaching Vertical Cable Tray Tees Vertical cable tray tees should be supported within 600 mm (2 ft) of each fitting extremity.

42. CABLE TRAY Never Stop Learning Because Life Never Stop Teaching Fixing of Cable Tray

43. CABLE TRAY Never Stop Learning Because Life Never Stop Teaching Expansion Splice Plate Attachment Splice Plate Attachment Straight Cable Tray Installation Straight Cable Tray Installation

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51. CABLE TRAY Never Stop Learning Because Life Never Stop Teaching THANK YOU