Enclosure NEMA 4X Non Metallic

[cuky2000]

In the old-time was common to specify stainless steel or aluminum enclosure for NEMA 4X application. Perhaps PVC or non-metallic compound were available or just introduced in the market.

Does PV or Polyvinyl meet today the requirement for NEMA 4X in HV Utility applications?

 

[7anoter4]

Glass reinforced polyester material was the recommended already 30 years ago. Now it could be the P.V.C.turn. I got once polyvinyl boxes from Australia-I guess-for NEMA 9 [Hazardous Location class II Division I] instead of cast iron.

 

[7anoter4]

See:[for instance]:

https://www.vynckier.com/product-ca...losures/vj-fiberglass-frp-nema-4x-enclosures/

 

[jraef]

PVC is often problematic in sunlight exposed applications, the UV makes it more susceptible (i.e. less resistant) to impacts, which is a problem for enclosures. Still, people use PVC because it is inexpensive. FRP (Fiber Reinforced Plastic) is the preferred material for non-metallic N4X, but is more expensive.


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