Originally Posted by farmer56
does 2011 nec code book require the use of expansion joints on any pvc conduit run or just pvc in the ground?
Both.How long is your run?
352.44 Expansion Fittings. Expansion fittings for PVC
conduit shall be provided to compensate for thermal expansion
and contraction where the length change, in accordance
with Table 352.44, is expected to be 6 mm (1⁄4 in.) or greater in
a straight run between securely mounted items such as boxes,
cabinets, elbows, or other conduit terminations.