HDPE conduit shall not be subjected to ambient temperatures in excess of _____, unless listed otherwise.
a) 50°C
b) 60°C
c) 75°C
d) 90°C
See answer and applicable Code reference
The correct answer is: a) 50°C
Article 353 covers the use, installation, and construction specifications for high density polyethylene (HDPE) conduit and associated fittings. As per 353.12(4), "HDPE conduit shall not be used where subject to ambient temperatures in excess of 50°C unless listed otherwise."
