Class 2 Enclosed Electronic Transformers. Combining Class 2 Transformers in a single package creates a single source to wire multiple runs of low voltage fixtures such as under cabinet and display luminaires . Secondary wiring for Class 2 transformers does not require conduit sheathed cable or clamp wiring techniques. Intrinsically safe, Class 2 transformers permit no greater than a 5 amp current be drawn. Non-metallic sheathed cable may be used for secondary wiring in walls and ceilings. Drop down to a smaller gauge wire if space in fixture does not permit secure connection directly with the non-metallic sheathed cable. Powers most cabinet fixtures.