As the industry leading designer, manufacturer, and supplier of low voltage, general purpose transformers. Schneider Electric has the expertise necessary to meet your increased demands by providing reliable products and outstanding support services. Resin-filled general purpose transformers are epoxy encapsulated. The enclosure has no openings, making resin-filled transformers ideal for use indoor or outdoor where airborne particles or contaminants could be detrimental to operation. The core-and-coil assembly is embedded in an epoxy resin compound and wall mounted for maximum protection. These units can be used outdoors without accessories. Units are UL Listed and CSA Certified. This mechanical lug kit is an electrical accessory. This Mechanical Lug Kit, 250A, 1Ph Primary-3Ph Wye or Delta Secondary Transformer, requires AWG 14/AWG 2 stranded, is made of aluminium and comes in a set of 5.