Wiring:The iWave-R has a patented universal voltage 24VAC to 240VAC input capability. The black wire (marked ‘AC’ on label) is for 24VAC to 240VAC voltage enter. The white wire (marked ‘N’ to the label) is the neutral leg for 24VAC or 120VAC; or one other hot leg for 208/240VAC. https://donorsearch89012.blogcudinti.com/28597347/what-does-wealth-engine-mean