|No EMT Fitting is Listed as Raintight!
|At the local International Association of Electrical Inspectors chapter meeting we learned something I
thought you should hear about. Feel free to pass the word.
(June 2003), no manufacturer is authorized to mark their Listed compression type
EMT fittings with the "Raintight" marking.
There are no raintight
electrical metallic tubing (EMT) fittings approved by any nationally recognized
testing laboratory at this time. No matter what the box or packaging says. Most
manufacturers have removed the listing information, others have
Issue will be big deal in some jurisdictions and a non-issue in
others (NEC 90-4 and 90-7).
Mike Holt's Comment: I
wonder if compression type threadless fitting for Rigid Metal and Intermediate
Metal Conduit are listed for this purpose?
Article 100 defines
"Raintight" as "Constructed or protected so that exposure to a beating rain will
not result in the entrance of water under specified test
225.22 Raceways on Exterior Surfaces of Buildings or Other
Structures. Raceways on exterior surfaces of buildings or other structures shall
be raintight and arranged to drain.
230.53 Raceways to Drain. Where
exposed to the weather, raceways enclosing service-entrance conductors shall be
raintight and arranged to drain. Where embedded in masonry, raceways shall be
arranged to drain.
358.42 Couplings and Connectors. Couplings and
connectors used with EMT shall be made up tight. Where buried in masonry or
concrete, they shall be concretetight type. Where installed in wet locations,
they shall be of the raintight type.
It always amazes me how I learn
something new every day.. It never ends.