Wiring:The iWave-R has a patented common voltage 24VAC to 240VAC enter functionality. The black wire (marked ‘AC’ on label) is for 24VAC to 240VAC voltage input. The white wire (marked ‘N’ within the label) will be the neutral leg for 24VAC or 120VAC; or one other scorching leg for 208/240VAC.Understand what documentation you need to be try