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Cooper B-Line CT02MAN User Manual

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CABLE TRAY MANUAL
Based on the
2002 National Electrical Code
®
2002
CT02MAN

Table of Contents

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Cooper B-Line CT02MAN Specifications

General IconGeneral
BrandCooper
ModelB-Line CT02MAN
CategoryCables and connectors
LanguageEnglish

Summary

Introduction

Why Cable Tray?

Safety Features

Discusses safety advantages over conduit systems, preventing gas transmission.

Dependability

Highlights proven track record and reliability in industrial and broadcast applications.

Space Savings

Explains how cable trays require less space than conduit systems, ideal for high-density wiring.

Cost Savings

Details initial installation savings and long-term cost reductions compared to conduit.

Design Cost Savings

Covers reduced engineering time and simplified design process for cable tray.

Material Cost Savings

Compares material costs of cable trays versus conduits, pull boxes, etc.

Installation Cost and Time Savings

Focuses on labor savings and faster installation compared to conduit systems.

Maintenance Savings

Explains how cable tray allows for quick and low-cost wiring additions or modifications.

Abandoned Cables

Discusses identification, removal, and rearrangement of abandoned cables in cable trays.

An In-depth Look at 2002 NEC® Article 392 - Cable Tray

392.1. Scope.

Defines the scope of Article 392, covering cable tray systems and their applications.

Cable Tray Materials

Details available materials like aluminum, steel, and non-metallic options for cable trays.

392.3. Uses Permitted. (A) Wiring Methods.

Identifies permissible cable types (multiconductor, MI, MC, TC, PLTC, etc.) for cable tray support.

392.3. Uses Permitted. (B) In Industrial Establishments.

Covers specific rules for single conductor, MV, and grounding conductor use in industrial settings.

392.4. Uses Not Permitted.

Specifies locations where cable trays are prohibited, such as hoistways or severe damage areas.

392.5. Construction Specifications. (A) Strength and Rigidity.

Covers factors for selecting cable tray strength, including load, supports, and rigidity.

392.6. Installation. (A) Complete System.

Addresses the requirement for a complete, mechanically discontinuous system with bonding.

392.6. Installation. (J) Conduits and Cables Supported from Cable Tray.

Covers rules for supporting conduits and other items from cable tray systems.

392.7. Grounding. (A) Metallic Cable Trays.

Details grounding requirements for all metallic cable trays, regardless of EGC use.

392.8. Cable Installation. (D) Connected in Parallel.

Covers requirements for paralleling conductors and cost savings compared to conduit.

392.9. Number of Multiconductor Cables.

Explains width selection for mixed cable sizes, requiring a single layer for larger cables.

392.10. Number of Single Conductor Cables, Rated 2000 Volts or Less in Cable Trays.

Specifies installation requirements for single conductor cables in cable trays.

392.11. Ampacity of Cables Rated 2000 Volts or Less in Cable Trays.

Discusses ampacity correction factors and derating for multiconductor cables in trays.

CABLE TRAY WIRING SYSTEM DESIGN AND INSTALLATION HINTS.

Provides guidance on standardized cabling strategies, cable types, and record keeping.

392.7. Grounding.

(A) Metallic Cable Trays.

Details grounding requirements for all metallic cable trays, regardless of EGC use.

(B) Steel or Aluminum Cable Tray Systems. (1) & (2)

Discusses metal area requirements for using cable trays as Equipment Grounding Conductors (EGCs).

(B) Steel or Aluminum Cable Tray Systems. (3) & (4)

Covers bonding requirements for continuity and fault current capacity.

392.8. Cable Installation.

(A) Cable Splices.

Addresses safety and accessibility requirements for making cable splices in cable trays.

(B) Fastened Securely.

Explains when and how multiconductor cables should be tied down in cable trays.

(C) Bushed Conduit and Tubing.

Details methods for terminating conduit on cable tray and protecting cables from abrasion.

(D) Connected in Parallel.

Covers requirements for paralleling conductors and cost savings compared to conduit.

(E) Single Conductors.

Specifies installation requirements for single conductor cables in cable trays.

392.9. Number of Multiconductor Cables.

Rated 2000 Volts or less, in Cable Trays. (A) Any Mixture of Cables. (1) 4/0 or Larger Cables

Explains width selection for mixed cable sizes, requiring a single layer for larger cables.

(A) Any Mixture of Cable. (2) Cables Smaller Than 4/0

Details allowable fill areas for smaller multiconductor cables in ladder/trough trays.

(A) Any Mixture of Cables. (3) 4/0 or Larger Cables Installed With Cables Smaller Than 4/0

Covers mixed installations with dedicated zones for larger and smaller cables.

(B) Multiconductor Control and/or Signal Cables Only.

Specifies fill limitations for control and signal cables in ladder/trough trays.

(C) Solid Bottom Cable Trays Containing Any Mixture. (1) 4/0 or Larger Cables

Details reduced fill areas for solid bottom trays with larger mixed cables.

(C) Solid Bottom Cable Trays Containing Any Mixture. (2) Cables Smaller Than 4/0

Explains fill area calculations for smaller cables in solid bottom trays.

(D) Solid Bottom Cable Tray Multiconductor Control and/or Signal Cables Only.

Details reduced fill limits for control/signal cables in solid bottom trays.

(E) Ventilated Channel Cable Trays.

Provides fill areas for single and multiple multiconductor cables in ventilated channel trays.

(F) Solid Channel Cable Trays.

Provides fill areas for single and multiple multiconductor cables in solid channel trays.

392.10. Number of Single Conductor Cables, Rated 2000 Volts or Less in Cable Trays.

(A) Ladder or Ventilated Trough Cable Trays. (1) 1000 KCMIL or Larger Cables

Explains width selection for large single conductor cables in ladder/trough trays.

(A) Ladder or Ventilated Trough Cable Trays. (2) 250 KCMIL to 1000 KCMIL Cables

Details width selection for medium single conductor cables in ladder/trough trays.

(A) Ladder or Ventilated Trough Cable Trays. (4) Cables 1/0 Through 4/0

Explains width selection for smaller single conductor cables in ladder/trough trays.

(B) Ventilated Channel Cable Trays.

Provides fill areas for single and multiple conductor cables in ventilated channel trays.

392.11. Ampacity of Cables Rated 2000 Volts or Less in Cable Trays.

(A) Multiconductor Cables.

Discusses ampacity correction factors and derating for multiconductor cables in trays.

(B) Single Conductor Cables.

Details ampacity requirements for single conductor cables based on tray type and spacing.

392.12. Number of Type MV and Type MC Cables (2001 Volts or Over) in Cable Trays.

392.13. Ampacity of Type MV and Type MC Cables (2001 Volts or Over) in Cable Trays.

(B) Single Conductor Cables (2001 Volts or Over).

Details ampacity for single conductor MV/MC cables based on spacing and tray type.

CABLE TRAY WIRING SYSTEM DESIGN AND INSTALLATION HINTS.

CABLE TRAY ACCESSORIES.

CABLE TRAY MAINTENANCE AND REPAIR

FIREPROOFING CABLE TRAY

CABLE TRAY. THERMAL CONTRACTION AND EXPANSION

Appendix Pages

Appendix Sheet 1

Details temperature rise tests for connectors in aluminum and steel ladder tray.

Appendix Sheet 2

Presents temperature rise tests for conduit clamps used for bonding rigid conduit.

Appendix Sheet 3

Provides an example calculation for NEC® Section 392.9(A)(1) regarding cable tray width.

Appendix Sheet 4

Offers an example calculation for NEC® Section 392.9(A)(2) regarding cable tray width.

Appendix Sheet 5

Shows an example calculation for NEC® Section 392.9(A)(3) regarding cable tray width.

Appendix Sheet 6

Provides an example calculation for NEC® Section 392.9(B) regarding cable tray width.

Appendix Sheet 7

Lists minimum equipment grounding conductor sizes according to Table 250.122.

Appendix Sheet 8

Includes a flowchart for sizing cable trays based on NEC Article 392.

Appendix Sheet 9

Provides a checklist for cable tray installation and specifications.

Appendix Sheet 10

Lists additional resources and engineering software for cable tray applications.

Appendix Sheet 11

Details B-Line's wire management resources and product catalogs.

CABLE TRAY INSTALLATION & SPECIFICATION CHECKLIST

Project Information

Collects essential project details for cable tray installation and specification.

Additional Cable Tray Resources

B-Line Engineering Software

B-Line Wire Management Resources

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