INSTALL CONVENIENCE DEVICES

SUBCOURSE ARMY ENGINEER SCHOOL CONVENIENCE DEVICES CONVENIENCE DEVICES Number EN 5145 B States Army Engineer School Leonard Wood Missouri 65473 Credit Hours Date October 1999 OVERVIEW subcourse is designed to teach the knowledge necessary to describe the types and installation of switches receptacles and incandescent and fluorescent lighting fixtures This subcourse three lessons each corresponding to a terminal learning objective as indicated below are no prerequisites for this subcourse subcourse reflects the doctrine which was current at the time it was prepared In your own work always refer to the latest official publications A contains a metric conversion chart otherwise stated the masculine gender of singular pronouns is used to refer to both men and LEARNING OBJECTIVE will learn to describe the types of switches receptacles and incandescent and lighting fixtures and their installation procedures will be given the material in this subcourse and an Army Correspondence Program ACCP examination response sheet demonstrate competency of this task you must achieve a minimum of 70 percent the subcourse examination OF CONTENTS Overview i Instructions iv and Certification Instructions iv 1 Switches 1 1 A Basic Switches 1 2 B Installing Basic Switches 1 4 C Types of Switches 1 7 Exercise 1 17 Key and Feedback 1 19 2 Receptacles 2 1 A Basic Receptacles 2 2 B Special Use Outlets 2 6 C Power Outlets 2 8 D Miscellaneous Receptacles 2 11 Exercise 2 13 Key and Feedback 2 14 3 Lighting Fixtures 3 1 A Basic Incandescent Light Fixtures 3 2 B Basic Fluorescent Light Fixtures 3 9 Exercise 3 20 Key and Feedback 3 21 A Metric Conversion Chart A 1 B List of Common Acronyms B 1 C Recommended Reading List C 1 Inquiry Sheets Electronic Examination Information paper subcourse does not contain the examination The examination response sheet is included as a mailing label You must go to the following web site to complete the examination and submit for grading students those with ACCP userids and passwords should key in the userid and password to then click on the EXAM button to access the examination who have not yet registered should click on the REGISTER button on the lower right corner of screen Follow directions to create a userid and password Then click on the EXAM button to the examination INSTRUCTIONS of lessons in this subcourse Three Materials you need in addition to this booklet are a number No 2 pencil and the ACCP response sheet and the preaddressed envelope you received with this subcourse requirements None The following publications provide additional information about the material in this You do not need these materials to complete this subcourse 5 424 Theater of Operations Electrical Systems 25 June 1997 Training Publication STP 5 51R12 SM TG Soldier Manual and Trainer Guide 51R Interior Electrician Skill Levels 1 2 27 October 1988 National Electrical Code NEC available from the Fire Protection Association Batterymarch Park Massachusetts 02269 9101 AND CERTIFICATION INSTRUCTIONS This subcourse contains a multiple choice examination covering the material in the three After studying the lessons and working through the practice exercises complete the Mark your answers in the subcourse booklet and then transfer them to the ACCP response sheet Completely black out the lettered oval which corresponds to your selection B C or D Use a No 2 lead pencil to mark your responses When you complete the ACCP response sheet mail it in the preaddressed envelope you received with this subcourse You receive an examination score in the mail You will receive three credit hours for successful of this examination Task 051 246 1112 1 this lesson you will learn to describe the types of switches and their installation procedures DESCRIPTION LEARNING OBJECTIVE will learn to describe the types of switches and their installation procedures will be given the material contained in this lesson will correctly answer practice exercise questions at the end of this lesson The material contained in this lesson was derived from STP 5 51R12 SM TG FM 5 and the National Electrical Code NEC lesson part of the military occupational specialty MOS 51R Skill Levels 1 and 2 course provides knowledge necessary to identify and install the various types of electrical switches A BASIC SWITCHES electrical device itself color shape and printed words provides important installation information 1 1 1 1 Electrical switches UL stamp Figure 1 2 means that the Underwriters Laboratories Inc UL has tested the device found it safe for use 1 2 Safety tested stamp are now manufactured with green grounding screws attached This will allow for the circuit the switch to be grounded without using a metal box Figure 1 3 1 3 Green ground screw found on most new switches may have the initials CU AL imprinted on them Figure 1 4 This means the device is for copper and aluminum conductors However due to a change in the NEC aluminum cannot be used for interior branch circuits They are only approved for service entrance 1 4 Approved conductors proper wiring of a circuit is one of the most important factors for installing a device The NEC code must be followed Single pole switches are not color coded both screws will be the same B INSTALLING BASIC SWITCHES ears on a device keep it even with the