Thanks a ton. I surely have more knowledge than with what I started with. I have read AN220, very interesting indeed. This project idea came to me while doing experiment in the LAB last week (doing my HND in electronics currently).<br>Taking readings there didn't seem much complicated then, we had Voltek PM1000 to do this job. Now that I want to do it myself, I can see the hurdles ahead, mainly of understanding properly terms like gain, harmonics etc. But I have hope that I will be able to find many answers in the forum only.<br><br>So after my first attempt in reading everything from AN220, and little bit about MCP3906 I have the following questions:<br>1) With MCP3906 what is the MAX load I can put?<br>2) What does this statement mean: "32:1 PGA - MCP3906"<br><br>My main aim is to do this calculation on inductive loads (motors) only running on single phase 230Vrms<br>That's it for now. As I will go along, I will be posting more questions. Thanks