Rain-tight compression-type EMT fittings
UL offers Listing service for rain-tight compression-type EMT fittings under the product category Electrical Metallic Tubing (EMT) Fittings (FKAV) located on page 33 of the 2005 General Information Directory for Electrical Equipment (White Book).
UL recently conducted a study to determine the reliability of rain-tight compression fittings to consistently comply with the wet location test criteria. Based on the results, UL initiated a more stringent follow-up test program to verify these products consistently exclude water to maintain their rain-tight marking.
As of March 2002, manufacturers of UL Listed rain-tight (wet location) compression type EMT fittings were required to comply with the more stringent follow-up test requirements. If they did not comply, they were no longer authorized to designate their UL Listed fittings with the rain-tight marking.
Several manufacturers have Listing up to 2 and 3 inch trade size
As of June 2005, several manufacturers are authorized to mark their Listed compression type EMT fittings with the rain-tight marking up to 2 inch trade size. At least one manufacturer has up to 3 inch trade size fittings Listed for rain-tight or wet locations.
These fittings are typically provided with additional gaskets, sealing or "O" rings, or additional assembly instructions that must be followed to exclude water. The instructions on the carton must be followed for proper installation. Look for the rain-tight or wet locations marking on the container and the UL Mark on the fitting.
The availability of rain-tight fittings may change as manufacturers redesign their fittings to comply with UL's follow-up rain-tight testing. It is imperative to always look for the proper marking on the product and container. If the product is not marked with the UL Listing Mark, and the container is not marked rain-tight or wet locations, then the fittings have not been Listed for rain-tight or wet-location applications. This page will continue to be updated as new rain-tight Listings are promulgated.
