Wiring:The iWave-R incorporates a patented common voltage 24VAC to 240VAC enter ability. The black wire (marked ‘AC’ on label) is for 24VAC to 240VAC voltage input. The white wire (marked ‘N’ to the label) would be the neutral leg for 24VAC or 120VAC; or another hot leg for 208/240VAC.CONS: We appreciate the mapping feature and hope It will