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Description / Abstract:
This Standard applies to corrugated electrical nonmetallic
tubing (ENT) and mechanically-attached fittings, for use in
accordance with C22.1, Canadian Electrical Code, Part I (CEC), and
NFPA 70, National Electrical Code (NEC). These requirements also
apply to mechanically-attached fittings integral with an outlet
box.
Products covered by this Standard are intended for use:
a) at a maximum continuous operating temperature of 75°C
(167°F);
b) at a maximum ambient temperature of 50°C (122°F);
c) in attics provided that the ENT is installed no higher than
900 mm (3 ft) above the bottom of the ceiling joist, and
the ENT material is rated minimum 60°C (140°F); and
d) underground (direct burial), in Canada only.
This Standard does not apply to fittings that are intended to be
joined by solvent cement. Solvent-attached fittings are covered by
UL 651 or CSA C22.2 No. 211.2. Solvent-attached fittings integral
with an outlet or flush device box are covered by UL 514C or
CAN/CSA-C22.2 No. 85.