The National Electrical Manufacturers Association (NEMA) has published VE 1-2009 Metal Cable Tray Systems. The standard is also published by the Canadian Standards Association as CSA C22.2 No. 126.1-09.
NEMA VE 1-2009/CSA C22.2 No. 126.1-09 is the third edition of the common NEMA and CSA specification for metal cable tray systems for use in North America, providing technical requirements concerning the construction, testing and performance of metal cable tray systems. It supersedes the second edition, published in 2002.
Revisions include changes to the fill depth section and requirements for load testing for wire mesh. The load class designation table was also split into separate tables for the United States and Canada.
The contents and scope of VE 1-2009 may be viewed, or a hardcopy or electronic copy purchased, at www.nema.org/stds/ve1.cfm.