Wiring:The iWave-R provides a patented universal voltage 24VAC to 240VAC input ability. The black wire (marked ‘AC’ on label) is for 24VAC to 240VAC voltage enter. The white wire (marked ‘N’ to the label) is definitely the neutral leg for 24VAC or 120VAC; or one other sizzling leg for 208/240VAC. Know your prospects, donors and consu