Historical
NEMA TC 7-2013
Smooth Wall Coilable Electrical Polyethylene Conduit
Covers several types of high-density polyethylene (HDPE) conduit for use in providing a protective raceway for electrical cables buried underground. The HDPE conduit types in this specification can be installed direct buried or concrete encased. They are: EPEC-17û HDPE This type represents the nominal dimensions for HDPE conduit as specified by ASTM D 3035, SDR 17 and UL 651B or UL1990 for CIC; EPEC-13.5û HDPE This type represents the nominal dimensions for HDPE conduit as specified by ASTM F 2160, SDR 13.5 and UL 651B or UL 1990 for CIC; EPEC-40û HDPE This type represents the nominal dimensions for HDPE conduit as specified by ASTM F 2160, Schedule 40 and UL 651B or UL 1990 for CIC; EPEC-80û HDPE This type represents the nominal dimensions for HDPE conduit as specified by ASTM F 2160, Schedule 80 and UL 651B or UL 1990 for CIC; EPEC-11-HDPE This type represents the nominal dimensions for HDPE conduit as specified by ASTM F 2160, SDR 11 and is not currently covered by UL.
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NEMA: National Electrical Manufacturers Association [nema]
