THE ULTIMATE ON-THE-JOB COMPANION--FULLY UPDATED Thoroughly revised to reflect the 2011 National Electrical Code (NEC) and the latest industry advances, Electrician's Calculations Manual, Second Edition gives you quick access to the basic calculations needed for any given job. The book also serves as an ideal review for license preparation. End-of-chapter questions plus an end-of-book final test help reinforce the material covered. Written by a Master Electrician with more than 40 years of experience, this practical guide helps you: Find answers for both AC and DC circuits Solve problems related to motor circuits and transformers Calculate single-dwelling and multifamily loads Accurately figure requirements for commercial jobs Perform conduit-bending math Handle service entrance problems Understand the math behind electrical solutions And much moreThe difference between 6-lead and 12-lead motors is that a 6-lead motor works on single-voltage supply, whereas a ... A nine-lead motor is a single-speed dual- voltage motor that can be wired for 240 volts or 480 volts. ... On the delta low- voltage diagram, 9, 5, and 3 are tied together and connect to T3; 4, 8, and 2 are tied together and connect to T2; and 7, 6, and 1 are tied together and connect to T1.
|Title||:||Electrician's Calculations Manual, Second Edition|
|Publisher||:||McGraw Hill Professional - 2011-08-05|