smoothops10
Member
- Location
- FL
- Occupation
- EE
NEMA bulletin linked at end states "PVC -coated RMC, IMC or EMT are not intended for use in a Class II classified location due to the possibility of a static charge on the PVC coating."
However, I see several manufacturers (RedDot, Clabond, etc) marketing their PVC Coated conduit offerings for Hazardous Locations including Class II dust locations and have found no other literature on this concern. I understand the static electric discharge concern but seems somewhat unrealisticand as the plastic coated metal pipe is bonded on both ends. I have reviewed NFPA 77 but the standard only adresses limiting plastic conduit used for fluid transfer and has no commentary in annex or standard on PVC coated conduit being restricted or recommended against in dust locations.
Just looking for opinions, PVC coated rigid metal conduit in Class II Hazardous Locations - is there a real concern here?
Thanks.
https://www.nema.org/Technical/Docu...l Conduit and Electrical Metalling Tubing.pdf
However, I see several manufacturers (RedDot, Clabond, etc) marketing their PVC Coated conduit offerings for Hazardous Locations including Class II dust locations and have found no other literature on this concern. I understand the static electric discharge concern but seems somewhat unrealisticand as the plastic coated metal pipe is bonded on both ends. I have reviewed NFPA 77 but the standard only adresses limiting plastic conduit used for fluid transfer and has no commentary in annex or standard on PVC coated conduit being restricted or recommended against in dust locations.
Just looking for opinions, PVC coated rigid metal conduit in Class II Hazardous Locations - is there a real concern here?
Thanks.
https://www.nema.org/Technical/Docu...l Conduit and Electrical Metalling Tubing.pdf