If you are an Electrician, Electrical engineer, if you perform Plant Maintenance, if you install new equipment, overhaul old equipment, or if you do ANYTHING that involved electrical energy, you need to have a copy of this book in your possession. The charts, tables, illustrations and examples in this booklet are so vital to the electrical world, that this should be a mandatory purchase for anyone that works on wires, period.
What more can be said? Not only does this book have all the latest requirements of the NEC, but it also contains hugely valuable conversion tables, info on First Aid, pulleys, Pipe bending, fractions, equations, and basic safety requirements. I have always had an Ugly's book in my toolbag. Invariably, it gets used so much, that the pages are worn, dog-eared, and dirty that when the next edition comes out, I'm first in line to buy it.