Every word in the 2017 National Electrical Code book put into an index with page numbers. Now you can find it in the Code in seconds! This book is a great study aid for electrical exams and is specially designed to increase your speed by getting you familiar with those hard to find references in the NEC. The key word index also includes references for key words not listed in the back of the code book! See what everyone is raving about and pick up your copy of the key word index today!