Power and Transformers
Complete Guide to Fiber Optic Cable Systems Installation by Eric Pearson
EC&M's Practical Guide to Troubleshooting, Installation, & Maintenance of Variable Frequency.
Audio/Video Cable Installer's Pocket Guide (Pocket Reference) [Paperback] by Stephen Lampen
Electric Machinery and Power System Fundamentals [Hardcover] by Stephen Chapman
EC&M's Understanding NEC Rules on Transformers, 2nd Ed. - 2002 NEC by , John M. Paschal