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Cable TrayThe following technical information is from the Cable Tray Institute
Technical Papers from the Cable Tray Institute
Tray Cables for Your Next Installation - Though rapidly increasing in
popularity, tray cables are still a point of confusion for many. While the term
“tray cable” is being heard everywhere, many do not understand what exactly
a tray cable is or the benefits of using tray cables. Another gray area for many
comes from the variety of types of tray cable, what each means and in which
applications each type should be used. This
paper defines what a tray cable is, describes the different types of tray
cables, provide uses and standards for each type of tray cable. It will also
provides a reference guide regarding the applications and governing standards
for each tray cables type - from Turck.
The National Electrical Manufacturers Association (NEMA) has published NEMA VE 2-2013 Cable Tray Installation Guidelines. The fourth edition of this publication, VE 2 is a practical guide for the proper installation of cable tray systems.This publication addresses shipping, handling, storing, and installing cable tray systems. Information on maintenance and system modification is also provided. Cable tray system design must comply with National Electrical Code® Article 392, NEMA VE 1 Metal Cable Tray Systems, NEMA FG 1 Fiberglass Cable Tray Systems, and follow safe work practices as described in NFPA 70E Standard for Electrical Safety in the Workplace. The guidelines in this publication are useful to engineers, contractors, and maintenance personnel.NEMA VE 2-2013 has been revised to reference the 2011 version of the National Electrical Code® and provides clarification for grounding and bonding cable trays, as well as recent cable tray product developments. NEMA VE 2-2013 Cable Tray Installation Guidelines may be downloaded at no cost on the NEMA website or purchased in hardcopy for $88.