NONRESIDENT TRAINING COURSE Electrician’s Mate NAVEDTRA 14344 DISTRIBUTION STATEMENT A: Approved for public release; distribution is unlimited. PREFACE About this course: This is a self-study course. By studying this course, you can improve your professional/military knowledge, as well as prepare for the Navywide advancement-in-rate examination. It contains subject matter about day- to-day occupational knowledge and skill requirements and includes text, tables, and illustrations to help you understand the information. An additional important feature of this course is its reference to useful information in other publications. The well-prepared Sailor will take the time to look up the additional information. History of the course: • Apr 1996: Original edition released. Authored by EMC(SW) Scottie Harris. • Sep 2003: Administrative update released. Errata incorporated. Reviewed by EMC(SW) Marcelito Sangalang and EMC(SW) Darryl Woodall. No change in technical content. NAVSUP Logistics Tracking Number 0504-LP-102-2479 TABLE OF CONTENTS CHAPTER PAGE 1. Rating Information, General Safety Practices, and Administration....................... 1-1 2. Electrical Installations............................................................................................ 2-1 3. AC Power Distribution Systems ............................................................................ 3-1 4. Shipboard Lighting................................................................................................. 4-1 5. Electrical Auxiliaries.............................................................................................. 5-1 6. Motor Controllers................................................................................................... 6-1 7. Maintenance and Repair of Rotating Electrical Machinery ................................... 7-1 8. Voltage and Frequency Regulation........................................................................ 8-1 9. Electrohydraulic Load-Sensing Speed Governors ................................................. 9-1 10. Degaussing.............................................................................................................10-1 11. Cathodic Protection................................................................................................11-1 12. Visual Landing Aids..............................................................................................12-1 13. Engineering Plant Operations, Maintenance, and Inspections...............................13-1 14. Engineering Casualty Control................................................................................14-1 APPENDIX I. Glossary ................................................................................................................. AI-1 II. References Used to Develop this NRTC................................................................ AII-1 III. Electrical Symbols ................................................................................................. AIII-1 INDEX.........................................................................................................................................INDEX-1 ASSIGNMENT QUESTIONS follow Index. CREDITS The illustrations listed below are included through the courtesy of the designated source. Permission to use these illustrations is gratefully acknowledged. Permission to reproduce illustrations and other materials in this publication must be obtained from the source. Source Figures Woodward Governor Company, 1994 9-1 9-16 9-2 9-17 9-4 9-18 9-5 9-19 9-12 9-20 9-13 9-21 9-14 9-22 9-15 9-23 CHAPTER 1 RATING INFORMATION, GENERAL SAFETY PRACTICES, AND ADMINISTRATION Your knowledge and skill make our modem Navy 12. Identify the use and stages of a counseling possible. Navy training manuals (TRAMANs) help you session. develop your technical skills. By learning the 13. Recognize the need for training within the information in this manual and gaining practical division, the department and the command. experience on the job, you will prepare yourself for a successful and rewarding Navy career. The Navy’s 14. Recognize the purpose of training forms and training system helps you learn the duties of the next records and identify their use to track and higher grade in your rating. To advance in rate, you monitor training. must demonstrate your performance on the job. You must master the required skills and compete in Navywide advancement exams for the next higher THE ELECTRICIAN’S paygrade. MATE RATING As an Electrician’s Mate (EM) you work with motors, generators, power and lighting distribution LEARNING OBJECTIVES systems, and a wide variety of test equipment. Your training for the EM rates includes electronics and Upon completion of this chapter, you should be able electrical theory, fundamentals of motor and generator to do the following: operation, alarms, sensors, and other electrical 1. Identify various NECs of the EM rating. equipment. To do your job, you use handtools and electrical measuring equipment to troubleshoot 2. Recognize the purpose of blueprints and electrical systems. Also, you use blueprints and drawings. schematic diagrams to understand the performance of 3. Recognize the basic safety requirements for an electrical circuit. working with electricity. The EM rating is a general rating and is not divided 4. Identify the safety procedures to follow when into service ratings. An example of a service rating is working on or with various tools, equipment, the Gas Turbine Systems Technician (GS). The rating and machinery. is divided into two service ratings-the GSE, who maintains the electrical support equipment, and the 5. Identify various sources of information about GSM, who maintains the mechanical or turbine portion safety. of the system. 6. Identify basic first-aid procedures to use on electrical shock victims. The EM rating is geared to shipboard duties; therefore, there are EMs on most naval vessels. Ashore, 7. Recognize the purpose of the Navy’s Hearing EMs may work in their rating in a repair facility or as Conservation and Noise Abatement, Heat an instructor. Sometimes, EMs work outside their rating Stress, and Hazardous Material programs. in a duty such as shore patrol or recruiting. Identify various warning tags, signs, and plates. 8. The requirements for advancement are outlined in 9. Recognize the purpose for equipment tag-out the Manual of Navy Enlisted Manpower and Personnel procedures. Classifications and Occupational Standards, NAVPERS 18068. By meeting these requirements, an 10. Identify the standard organization of EM assigned to any ship in the fleet is qualified to engineering departments aboard ship. perform all assigned duties. Some ships have special 11. Recognize the responsibilities of various equipment, such as complex degaussing systems on personnel in the engineering department. minesweepers. On this type of equipment, EMs require 1-1 special training. A Navy Enlisted Classification (NEC) SOURCES OF INFORMATION coding system identifies the personnel who have this special training. No single publication can give you all the information you need to perform the duties of your rate. NAVY ENLISTED CLASSIFICATION You should learn where to look for accurate, up-to-date CODES (NECs) information on all subjects related to the military requirements for advancement and the professional What you can do is indicated by your rate. qualifications of your rating. However, it does not show any of your special skills Some of the publications described here change within or outside your rating. NECs show specific from time to time. When using any publication that is qualifications that are not shown by the rate designation. subject to change or revision, be sure you have the latest The NEC identifies special qualifications by using a edition. four-digit number. The qualification considered the most important is identified by the first code number. You cannot depend on printed material alone. The qualification of secondary importance is shown by Much of your learning comes from watching the second code number. You get NECs by completing experienced personnel and practicing your skills. special on-the-job training (OJT) or through the successful completion of a class “C” school. Naval Education and Training Publications Some of the NECs that maybe assigned to qualified The Naval Education and Training Program EMs are as follows: Management Support Activity (NETPMSA) produces EM— 4613 IMA Outside Electrical Journeyman TRAMANS and NRTCs. These are used as references and for advancement purposes. NETPMSA also EM— 4615 Electric Motor Rewinder produces the Bibliography for Advancement Study, EM— 4632 Auxiliaries Electrical System Tech- NAVEDTRA 12052. nician Navy Training Manuals EM— 4666 Minesweeping Electrician EM— 4668 and 4669 Unrep Electrical Component The TRAMANs will help you gain the knowledge Maintenanceman you need to do your job and to advance. Some TRAMANs share general information, and personnel in EM— 4671 Shipboard Elevator Electronic/Elec- many ratings use them. Others, such as the EM, are trical System Maintenance Technician specific to a particular rating. EM— 4672 Steam Catapult Electrician You can tell whether a TRAMAN is the latest EM— 4673 Lamps Mk III Rast/Hrs Electrical Main- edition by checking the NAVEDTRA number. The letter following the number is the most recent edition of tenanceman the TRAMAN, and it is listed in the Catalog of EM— 4707 Machinery Systems Console Mainte- Nonresident Training Courses, NAVEDTRA