National Electrical Safety Code No. 3 (Third Edition)

National Electrical Safety Code No. 3 (Third Edition)

About four years ago the Bureau of Standards published the completed text of the National Electrical Safety Code for examination and trial use, an early revision being contemplated. War conditions interfered with this trial, so that the publication of a new edition has been greatly delayed. This revision has now been completed, and the revised code is offered in the form of a handbook for more convenient use. The discussion of the rules has been segregated under a separate cover so as to reduce the bulk of the main volume, and will appear as Bureau of Standards Handbook No. 4.

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Table of Contents:

COVER

PREFACE

CONTENTS

NATIONAL ELECTRICAL SAFETY CODE

SECTION 1. DEFINITIONS OF SPECIAL TERMS

SEC. 9. RULES COVERING METHODS OF PROTECTIVE GROUNDING OF CIRCUITS, EQUIPMENT, AND LIGHTNING ARRESTERS FOR STATIONS, LINES, AND UTILIZATION EQUIPMENT

PART 1. RULES FOR THE INSTALLATION AND MAINTENANCE OF ELECTRICAL SUPPLY STATIONS AND EQUIPMENT

SEC. 10. PROTECTIVE ARRANGEMENTS OF STATIONS AND SUBSTATIONS

SEC. II. PROTECTIVE ARRANGEMENTS OF EQUIPMENT

SEC. 12. ROTATING EQUIPMENT

SEC. 13. STORAGE BATTERIES

SEC. 14. TRANSFORMERS, INDUCTION REGULATORS, RHEOSTATS,GROUND DETECTORS, AND SIMILAR EQUIPMENT

SEC. 15. CONDUCTORS

SEC. 16. FUSES, CIRCUIT-BREAKERS, SWITCHES, AND CONTROLLERS

SEC. 17. SWITCHBOARDS

SEC. 18. LIGHTNING ARRESTERS

PART 2. RULES FOR THE INSTALLATION AND MAINTENANCE OF OVERHEAD AND UNDERGROUND ELECTRICAL SUPPLY AND SIGNAL LINES

SEC. 20. SCOPE OF RULES AND GENERAL REQUIREMENTS

SEC. 21. GENERAL RULES FOR POLE LINES

SEC. 22. CLEARANCES AND SEPARATIONS OF WIRES

SEC. 23. CLASSIFICATION OF CIRCUITS ACCORDING TO THE GRADE OF CONSTRUCTION REQUIRED

SEC. 24. SPECIFICATIONS FOR STRENGTH AND OTHER REQUIREMENTS FOR SUPPLY LINES OF GRADES A, B,AND C

SEC. 25. REQUIREMENTS FOR SUPPLY LINES, INCLUDING ELECTRIC RAILWAY FEEDERS

SEC. 26. CROSSINGS OF SUPPLY LINES OVER RAILWAYS

SEC. 27. SUPPLY LINES OVER SIGNAL LINES AND JOINT USEOF POLES

SEC. 28. STRENGTH AND OTHER REQUIREMENTS FOR SIGNAL LINES AT CROSSINGS AND ALONE

SEC. 29. UNDERGROUND LINES

APPENDIXES TO PART 2

APPENDIX B. LOADING DATA, MECHANICAL CHARACTERISTICS,AND RECOMMENDED SETTINGS OF OVERHEAD LINE SUPPORTS

PART 3. RULES FOR THE INSTALLATION AND MAINTENANCE OF ELECTRICAL UTILIZATION EQUIPMENT

SEC. 30. SCOPE OF RULES AND GENERAL REQUIREMENTS

SEC. 31. CONDUCTORS

SEC. 32. FUSES, CIRCUIT-BREAKERS, SWITCHES, AND CONTROLLERS

SEC. 33. SWITCHBOARDS AND PANEL BOARDS

SEC. 34. MOTORS AND MOTOR-DRIVEN MACHINERY

SEC. 35. ELECTRIC FURNACES, STORAGE BATTERIES,TRANSFORMERS, AND LIGHTNING ARRESTERS

SEC. 36. LIGHTING FIXTURES AND SIGNS

SEC. 37. PORTABLE DEVICES, CABLES, AND CONNECTORS

SEC. 38. ELECTRICALLY OPERATED CARS, CRANES, AND ELEVATORS

SEC. 39. TELEPHONE AND OTHER SIGNAL APPARATUS ON CIRCUITS EXPOSED TO SUPPLY LINES OR LIGHTNING

PART 4. RULES TO BE OBSERVED IN THE OPERATION OF ELECTRICAL EQUIPMENT AND LINES

SEC. 40. ORGANIZATION

SEC. 41. PROTECTIVE METHODS AND DEVICES

SEC. 42. GENERAL PRECAUTIONS

SEC. 43. GENERAL OPERATION

SEC. 44. HANDLING LIVE EQUIPMENT AND LINES

SEC. 45. KILLING SUPPLY EQUIPMENT AND LINES

SEC. 46. MAKING PROTECTIVE GROUNDS

SEC. 47. SUPPLY STATION AND SWITCHBOARD OPERATION

SEC. 48. OVERHEAD LINE OPERATION

SEC. 49. UNDERGROUND LINE OPERATION

SEC. 50. SERIES LAMP OPERATION

SEC. 51. METER OPERATION

SEC. 52. TESTING OPERATIONS

SEC. 53. TUNNEL AND SUBWAY OPERATION

SEC. 54. SIGNAL LINE OPERATION

SEC. 55. RULES FOR THE EMPLOYER—SIGNAL SYSTEMS

SEC. 56. GENERAL RULES FOR THE EMPLOYEE—SIGNALSYSTEMS

SEC. 57. SPECIAL RULES FOR OVERHEAD LINE OPERATION SIGNAL SYSTEMS

SEC. 58. SPECIAL RULES FOR UNDERGROUND LINE OPERATION- SIGNAL SYSTEMS

INDEX