This 45th edition?part of a series continuously published for more than 80 years and based on the 2017 National Electrical Code?is a handy instruction manual that has been used by generations of readers to learn the ??why?? as well as the ??how-to?? of wiring practices. Encouraging readers to tackle jobs small and large?? the guide covers everything from repairing a table lamp to wiring a whole house.