Read or Download Install System, Equipment and Component Grounds [US Army Subcourse EN5144] PDF
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Do not use the internal clamp screw to hold the ground conductor to the box. This screw is being used to hold the cable clamp and should not be used to hold the ground conductor. EN5144 2-10 LESSON 2 PRACTICE EXERCISE The following items will test your grasp of the material covered in this lesson. There is only one correct answer for each item. When you complete the exercise, check your answer with the answer key that follows. If you answer any item incorrectly, study again that part of the lesson which contains the portion involved.
False (page 2-10, para 2-3d) 10. A. True (page 2-7, para 2-2b) 11. B. False (page 2-10, para 2-3d) EN5144 2-14 APPENDIX A METRIC CONVERSION CHART This appendix complies with current Army directives which state that the metric system will be incorporated into all publications. Table A-1 is a conversion chart. Table A-1. Metric conversion chart A-1 EN5144 THIS PAGE IS INTENTIONALLY LEFT BLANK. EN5144 A-2 APPENDIX B LIST OF COMMON ACRONYMS ACCP Army Correspondence Course Program APD Army Institute for Professional Development AL aluminum AMEDD Army Medical Department APO Army Post Office AV Automatic Voice Network AVG American wire gauge °C degrees Celsius CU copper DETC Distance Education and Training Council DINFOS Defense Information School DOD Department of Defense DSN Defense Switched Network EN engineer °F degrees Fahrenheit FM field manual ICE Interservice Correspondence Exchange IPD Institute for Professional Development JFK John F.
There is only one correct answer for each item. When you complete the exercise, check your answer with the answer key that follows. If you answer any item incorrectly, study again that part of the lesson which contains the portion involved. 1. Which conductor is best? A. B. C. D. 2. Copper Aluminum Copper-covered aluminum Steel Ground conductors must be made of stranded wires. A. B. True False 3. Aluminum ground conductors are better to use in an electrical circuit because they do not loosen in the damp.