Wiring:The iWave-R features a patented common voltage 24VAC to 240VAC enter capability. The black wire (marked ‘AC’ on label) is for 24VAC to 240VAC voltage input. The white wire (marked ‘N’ on the label) would be the neutral leg for 24VAC or 120VAC; or one other scorching leg for 208/240VAC.Know very well what documentation you have to be