{"product_id":"electricity-4-ac-dc-motors-controls-and-maintenance-technical","title":"Electricity 4 AC\/DC Motors, Controls, and Maintenance - Technical","description":"\u003cp\u003eIn this review of Electricity 4: AC\/DC Motors, Controls, and Maintenance the reviewer finds a practical, hands-on resource for electricians, maintenance techs, and students who need a solid reference on motors and controls. The single biggest reason to buy is its combination of applied troubleshooting guidance and updated coverage of newer equipment such as Variable Frequency Drives, which helps readers get systems operating and understand the theory behind them for effective repairs and installation.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoverage of AC and DC motors:\u003c\/strong\u003e Clear explanations of motor types help readers identify, select, and troubleshoot common motor designs in industrial and commercial settings.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eControls explained:\u003c\/strong\u003e Manual, magnetic, and electronic control methods are described with practical details that aid in wiring and diagnostic work.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUpdated code and safety references:\u003c\/strong\u003e Material reflects the 2008 National Electrical Code and current OSHA Safe Work policies to guide compliant installation and safe maintenance.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFocus on troubleshooting:\u003c\/strong\u003e The book balances theory with step-by-step fault-finding approaches so technicians can isolate and correct motor and control problems.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNewer drive and servo content:\u003c\/strong\u003e Sections on Variable Frequency Drives and improved controls for servo and small motors bring the text closer to modern workshop practice.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWho It's For\u003c\/h2\u003e\n\u003cp\u003eThis edition is aimed at apprentices, journeyman electricians, maintenance technicians, and instructors who need a hands-on manual covering installation, operation, and repair of motors and control systems. The practical troubleshooting examples and safety references make it useful on the job and in classroom labs.\u003c\/p\u003e\n\u003cp\u003eThose seeking deep theoretical treatments of electric machine design, university-level research, or the very latest code editions should look elsewhere; this book is a vocational, applied reference rather than an advanced academic text or a fully up-to-the-minute code compendium.\u003c\/p\u003e\n\u003ch2\u003ePros \u0026amp; Cons\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003ePros\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003ePractical, applicable troubleshooting guidance that helps get systems running and diagnose faults.\u003c\/li\u003e\n\u003cli\u003eIncludes newer content on Variable Frequency Drives and controls for modern small motors and servos.\u003c\/li\u003e\n\u003cli\u003eSafety and code guidance tied to OSHA policies and the 2008 NEC aids compliant field work.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eCons\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eCode updates stop at the 2008 NEC, so users wanting the most current code language will need a newer code reference.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eTitle\u003c\/td\u003e\n\u003ctd\u003eElectricity 4: AC\/DC Motors, Controls, and Maintenance\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEdition\u003c\/td\u003e\n\u003ctd\u003eNinth Edition\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAuthor\u003c\/td\u003e\n\u003ctd\u003eJeffrey J. Keljik\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStandards updated to\u003c\/td\u003e\n\u003ctd\u003e2008 National Electrical Code\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSafety references\u003c\/td\u003e\n\u003ctd\u003eCurrent OSHA Safe Work policies\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAdded topics\u003c\/td\u003e\n\u003ctd\u003eVariable Frequency Drives, servo and small motor controls\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch2\u003eOur Verdict\u003c\/h2\u003e\n\u003cp\u003eElectricity 4 is a strong, practical reference for tradespeople and instructors who need applied instruction on motors, controls, and maintenance. Its emphasis on troubleshooting, safety, and newer drive technologies makes it good value for classroom use and on-the-job problem solving, though those requiring the latest NEC language should supplement it with current code publications.\u003c\/p\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eDoes this edition cover modern drives like VFDs?\u003c\/strong\u003e\u003cbr\u003eYes. The Ninth Edition adds material on Variable Frequency Drives and newer controls for servo and small motors.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIs the safety and code guidance current?\u003c\/strong\u003e\u003cbr\u003eThe book includes safety references aligned with current OSHA policies and is updated to the 2008 National Electrical Code, but it is not the latest NEC edition.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWho benefits most from this book?\u003c\/strong\u003e\u003cbr\u003eApprentices, electricians, and maintenance technicians benefit most for practical installation, troubleshooting, and maintenance guidance.\u003c\/p\u003e","brand":"Jeffrey J. 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