I. General

352.1 Scope. This article covers the use, installation, and

construction specifications for rigid polyvinyl chloride con
duit (PVC) and associated fittings.
FPN: Refer to Article 353 for High Density Polyethylene Conduit: Type HDPE, and Article 355 for Reinforced Thermosetting Resin Conduit: Type RTRC.

352.2 Definition.

Rigid Polyvinyl Chloride Conduit (PVC). A rigid nonme- tallic conduit (RNC) of circular cross section, with integral or associated couplings, connectors, and fittings for the installation of electrical conductors and cables.

352.6 Listing Requirements. PVC conduit, factory el- bows, and associated fittings shall be listed.

II. Installation

352.10 Uses Permitted. The use of PVC conduit shall be permitted in accordance with 352.10(A) through (H).

FPN: Extreme cold may cause some nonmetallic conduits to become brittle and, therefore, more susceptible to damage from physical contact.

(A) Concealed. PVC conduit shall be permitted in walls, floors, and ceilings.

(B) Corrosive Influences. PVC conduit shall be permitted in locations subject to severe corrosive influences as covered in 300.6 and where subject to chemicals for which the materials are specifically approved.

(C) Cinders. PVC conduit shall be permitted in cinder fill.

(D) Wet Locations. PVC conduit shall be permitted in portions of dairies, laundries, canneries, or other wet locations, and in locations where walls are frequently washed, the entire conduit system, including boxes and fittings used therewith, shall be installed and equipped so as to prevent water from entering the conduit. All supports, bolts, straps, screws, and so forth, shall be of corrosion-resistant materials or be protected against corrosion by approved corrosion-resistant materials.

(E) Dry and Damp Locations. PVC conduit shall be per mitted for use in dry and damp locations not prohibited by 352.12.

(F) Exposed. PVC conduit shall be permitted for exposed

work. PVC conduit used exposed in areas of physical dam
age shall be identified for the use.
FPN: PVC Conduit, Type Schedule 80, is identified for areas of physical damage.
(G) Underground Installations. For underground installa tions, homogenous and nonhomogenous PVC shall be per

mitted for direct burial and underground encased in con crete. See 300.5 and 300.50.

(H) Support of Conduit Bodies. PVC conduit shall be permitted to support nonmetallic conduit bodies not larger than the largest trade size of an entering raceway. These conduit bodies shall not support luminaires or other equipment and shall not contain devices other than splicing devices as permitted by

110.14(B) and 314.16(C)(2).

352.12 Uses Not Permitted. PVC conduit shall not be used under the conditions specified in 352.12(A) through (F).

(A) Hazardous (Classified) Locations. In any hazardous (classified) location, except as permitted by other articles of this Code.

(B) Support of Luminaires. For the support of luminaires or other equipment not described in

352.10(H).

(C) Physical Damage. Where subject to physical damage unless identified for such use.

(D) Ambient Temperatures. Where subject to ambient temperatures in excess of 50°C (122°F) unless listed otherwise.

(E) Insulation Temperature Limitations. For conductors or cables operating at a temperature higher than the PVC conduit listed operating temperature rating.

Exception: Conductors or cables rated at a temperature higher than the PVC conduit listed