Specifically regarding the use of PVC for electrical purposes. Every one is right that the PVC is not listed for the purpose. However, just for knowledge, there is no difference in the plastic formulation for the two products (white PVC and gray conduit) except that carbon black is added to make the white pipe gray. Therefore, the only risk caused by the substitution is violation of color coding. There is no risk because of differing electrical properties.

Darrel Hood
DILIGENT PROPERTY SERVICES
(936)827-7664