As a middle manager in a electical motor repair workshop, I found this book could give me up to date and pratical concepts in Electrical Engineering that is not easy to found in other books. Specially in the content about insulation material, it could stengthen the understanding of the basic concept of using of insulation materials in high and low voltage motors. I always put this book on my table for reference. As a conclusion, the content is practical and execllence. But it would be better if the of words of printing a little bit larger for easy reading.