Wiring:The iWave-R features a patented universal voltage 24VAC to 240VAC enter capability. The black wire (marked ‘AC’ on label) is for 24VAC to 240VAC voltage enter. The white wire (marked ‘N’ about the label) is the neutral leg for 24VAC or 120VAC; or the other scorching leg for 208/240VAC. https://donorsearch01244.tblogz.com/the-best-side-of-donorsearch-42793646