NEMA TC 19-2001 (R2009)
Nonmetallic Riser U-Type Guards
standard by National Electrical Manufacturers Association,
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NEMA WD-AG 1-2017
Application Guide for Isolated Ground Wiring Devices
standard by National Electrical Manufacturers Association, 07/05/2017
NEMA TC 7-2016
Smooth-Wall Coilable Electrical Polyethylene Conduit
standard by National Electrical Manufacturers Association, 03/15/2017