Electronic Class 2 Transformer 120v Input 24v Output 60 WattInput: 120 VAC, 277 VAC, 50 60Hz 1W minimum load Secondary wiring for Class 2 transformers does not require conduit sheathed cable or clamp wiring techniques Preinstalled with 6' InvisiLED 24V lead wire . Also compatible with Straight Edge, Line, Line 2. 0, HR LED87 and HRLED90 fixture applications. 6' adapter cable included. Non metallic sheathed cable may be used for secondary wiring in walls and ceilings Drop down to a smaller gauge wire if space