Conduit

Rigid Conduit, Fittings, and Accessories – Frequently Asked Questions
25701 Science Park Drive
Cleveland, Ohio 44122
216-464-3400
1-800-3CARLON (322-7566)
www.carlon.com
occur. Covering the product with a tarp doesn't hurt, but you don't have to. The
worst thing that could occur is that some discoloration (aesthetic appearance),
but that won't affect he integrity of the conduit.
We are in the process of providing an installation in a salt-water environment. We
are utilizing PVC raceways, fiberglass equipment enclosures and stainless steel
hardware. We were provided PVC coated Myers hubs with the fiberglass (motor
starter) enclosures by the manufacturer. It would be a perfect situation to use
threaded PVC to connect to the Myers hubs and then use a male adapter on the
underside of our fiberglass wireway (line gutter). Is it acceptable to (the NEC)
thread schedule 40 PVC with a regular GRC hand threader?
Threading PVC conduit would void the UL listing. Threading is commonly done if
listing and inspection is not an issue. Majority of the people who thread the
conduit use Schedule 80 PVC to give themselves a thicker wall.
Can I use 2.5 sch. 80 PVC for a service mast? It will be 18 to 24 in above a roof
with out any support. If this is a good installation, how should I connect the
Eyebolt to the mast?
Section 230.28 of the 2002 National Electrical Code requires raceways used as a
service mast must be identified for the purpose or have the adequate strength.
Schedule 80 PVC conduit is not identified for this purpose. If the raceway were
supported than it would be acceptable.
Does Carlon publish information on the constant pressure under which their
Schedule 40 & 80 PVC conduits will maintain their rigidity?
If you are referring to internal pressures found for Water Pressure Pipe. Carlon
does not manufacture such a product.
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