Correctly select, operate, construct, and maintain electrical equipment with the 2005 edition of the only comprehensive guide to generators, transformers, motors, and compressors. With this guide you'll understand how and why these devices work, which NEC rules apply, and how to meet the 2005 Code, including new Article 409 concerning adjustable-speed drive systems, and the renumbered portions of Article 430. Get AC/DC formulas, Ohm's Law, three-phase...