Codes & Standards

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Standards

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FG 1, Fiberglass Cable Tray Systems
Covers construction and test requirements for continuous, complete nonmetallic systems of ladder, ventilated, solid bottom cable trays, or channel type trays, intended for the support of power or control cables, or both. Download NEMA FG 1 from the NEMA website (registration required) or purchase hard copy from Global/IHS.

VE 1, Metal Cable Tray Systems
Provides technical requirements concerning the construction, testing, and performance of metal cable tray systems. It is the first joint effort of NEMA and CSA International to put in one place standards for metal trays per both NEMA and CSA methods. Download NEMA VE 1.

VE 2, Metal Cable Tray Installation Guideline
Addresses shipping, handling, storing, and installation of metal cable tray systems. Information on maintenance and system modification is also provided. Download VE 2 from the NEMA website (registration required) or purchase a hard copy from Global/IHS.

Installation Guidelines

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The Cable Tray Institute is making available the current edition of this practical guide for the proper installation of aluminum or steel cable tray systems. These guidelines will be useful to engineers, contractors, and maintenance personnel. Ongoing periodic reviews will be done to reflect advancing technology and construction techniques.

VE 2, Metal Cable Tray Installation Guidelines
Addresses shipping, handling, storing, and installation of metal cable tray systems. Information on maintenance and system modification is also provided. Download VE 2 from the NEMA website (registration required) or purchase a hard copy from Global/IHS.

Codes and Standards Manufacturing Standards

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  • NEMA VE 1 Metal Cable Tray
  • CSA C22.2 Specification 126.1 Metal Cable Tray
  • NEMA FG 1 Fiberglass Cable Tray
  • CSA C22.2 Specification 126.2 Fiberglass Cable Tray
  • IEC 61537 Cable Tray and Cable Ladder Systems
  • UL 568 Fiberglass Cable Tray

Installation Codes

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  • NFPA-70 National Electrical Code
  • C22.1 Canadian Electrical Code-Part 1
  • NFPA-79 Industrial Machinery
  • NFPA-70E Employee Workplace

Installation Guidelines

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  • NEMA VE 2 Installation Guidelines
  • NECA/NEMA 105 Recommended Practice for Installing Cable Trays
  • IEEE 576 Recommended Practice for Installation, Termination and Testing of Insulated Power Cable

Specific Applications

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  • ASCE 7-05 or IEEE Standard C-2 National Electrical Safety Code
  • BICSI Telecommunications Distribution Methods Manual (TDMM)

Manufacturing Standards

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NEMA VE 1 – This standard specifies the manufacturing requirements for metal cable trays (such as; channel cable tray, ladder cable tray, single-rail cable tray, wire mesh cable tray, solid bottom or nonventillated cable tray and trough or ventilated cable tray) and associated fittings for use in accordance with the rules of the National Electrical Code.
This standard also provides load/span class designations.
Note: NEMA VE 1 and CSA C22.2 Specification #126.1 have been harmonized without deviation, therefore this standard is in accordance with the Canadian Electrical Code.

NEMA VE 1 Metal Cable Tray Systems can be obtained from Global Engineering Documents, www.global.ihs.com

NEMA FG 1 – This standard specifies the manufacturing requirements for nonmetallic (fiberglass) cable trays (such as; ladder cable tray trough or ventilated cable tray, solid bottom or nonventillated cable tray and channel cable tray) and associated fittings for use in accordance with the rules of the National Electrical Code.
NEMA FG 1 Fiberglass Cable Tray Systems can be obtained from Global Engineering Documents, www.global.ihs.com

IEC-61537 – This international standard specifies requirements and tests for cable tray systems (such as; all metal cable trays including wire mesh cable tray and nonmetallic cable trays) for the support, accommodation of cables and possibly other electrical equipment in electrical and/or communications systems installations.

IEC-61537 Cable Tray Systems and Cable Ladder Systems for Electrical Installations can be obtained from Global Engineering Documents, www.global.ihs.com

UL 568 – This Underwriters Laboratories standard covers the performance requirements for the safe application of fiberglass cable tray.

UL 568 can be obtained from Global Engineering Documents, www.global.ihs.com.

Installation Code

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NFPA 70 – The National Electrical Code covers the installation requirements for the safe application of cable tray systems including ladder, ventilated trough, ventilated channel, solid bottom and other similar structures.
Article 392 provides requirements such as “Uses Permitted”, which includes wiring methods permitted to be installed in cable tray, the “Cross Sectional Area Requirements for Cable Trays Used as Equipment Grounding Conductor” and the “Maximum Allowable Fill Area for Single-Conductor and Multi-Conductor Cables”
Article 310 provides the ampacities of conductors.

The NEC can be obtained from NFPA, www.nfpacatalog.org.

CEC C22.1-Part 1 – The Canadian Electrical Code is a safety standard for the installation and maintenance of electrical equipment in Canada.
Section 12-2200 provides requirements such as “Method of Installation”, “Ampacities of Conductors” and “Conductors in Cable Trays”.

The CEC can be obtained from the Canadian Standards Assn., www.csa.ca.

NFPA 79 – This standard covers the safe application of electric/electronic equipment, apparatus or systems supplied as part of industrial machinery or mass production industrial equipment.

NFPA 79 can be obtained from NFPA, www.nfpacatalog.org.

NFPA 70E – This standard covers protection to the employee from electrical hazards such as shock, arc blasts and explosions initiated by electricity.

NFPA 70E can be obtained from NFPA, www.nfpacatalog.org.

Installation Guidelines

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NEMA VE 2 – This standard is a practical guideline used by engineers, contractors and maintenance personnel for the proper shipping, handling, storing, maintenance and installation of both metal and nonmetallic cable tray systems.

NEMA VE 2 can be obtained from Global Engineering Documents, www.global.ihs.com

Additional technical information can be obtained from the manufacturers listed in VE 2.

NECA/NEMA 105 – This standard describes installation and maintenance procedures for metal cable tray systems used to support power and communications cabling. This standard was developed jointly with NEMA.

NECA 105 can be obtained from orderdesk@necanet.org.
IEEE 576 – This standard describes recommended practice for installation, termination and testing of insulated power cables in cable trays used in industrial and commercial applications.

IEEE 576 can be obtained from www.IEEE.org.

Specific Applications

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ASCE 7-05 – This American Society of Civil Engineers standard provides the minimum design load requirements for wind, snow, ice and earthquake.

ASCE 7-05 Minimum Design Loads for Buildings and Other Structures can be obtained from ASCE, www.pubs.asce.org
BICSI – Telecommunications Distribution Methods Manual. (TDMM)
Chapter 11 Firestops – Covers the guidelines for reestablishing the integrity of fire-rated architectural structures and assemblies (e.g., walls, floors, ceilings) when these barriers are penetrated.

TDMM can be obtained from www.bicsi.org.