Wiring:The iWave-R features a patented common voltage 24VAC to 240VAC input ability. The black wire (marked ‘AC’ on label) is for 24VAC to 240VAC voltage input. The white wire (marked ‘N’ to the label) will be the neutral leg for 24VAC or 120VAC; or the other sizzling leg for 208/240VAC.Nestor Gilbert is often a senior B2B and SaaS analyst