Understanding the National Electrical Code offers electricians a thorough understanding of how the 1999 National Electrical Code is organized, and simplifies this sometimes intimidating and confusing Code. It includes the 1999 Code changes, tips on proper electrical installations, advice and cautions about possible conflicts or confusing Code rules, warnings about dangers to persons and equipment as a result of improper installations, and more. This book thoroughly covers the most frequently used portions of the 1999 National Electrical Code, Chapters 1 through 4. Features: