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Home > McGraw-Hill's National Electrical Safety Code (NESC) 2012 Handbook
by: David J. Marne, P.E., B.S.E.E.
Abstract: Designed to be used alongside the Code itself, McGraw-Hill's National Electrical Safety Code® (NESC®) 2012 Handbook provides a rule-by-rule annotation of the NESC® that clarifies potentially confusing Code text and allows you to perform your work safely and confidently. This step-by-step guide explains how to apply and meet the NESC® rules for electrical supply stations and equipment, as well as overhead and underground electric supply and communications lines. Hundreds of illustrations and photos, practical examples, and concise language regarding complicated and controversial issues are included in this expert resource.
A. General Sections
1. Section 01: Introduction to the National Electrical Safety Code
2. Section 02: Definitions of Special Terms
3. Section 03: References
4. Section 09: Grounding Methods for Electric Supply and Communications Facilities
B. Part 1: Rules for the Installation and Maintenance of Electric Supply Stations and Equipment
5. Section 10: Purpose and Scope of Rules
6. Section 11: Protective Arrangements in Electric Supply Stations
7. Section 12: Installation and Maintenance of Equipment
8. Section 13: Rotating Equipment
9. Section 14: Storage Batteries
10. Section 15: Transformers and Regulators
11. Section 16: Conductors
12. Section 17: Circuit Breakers, Reclosers, Switches, and Fuses
13. Section 18: Switchgear and Metal-Enclosed Bus
14. Section 19: Surge Arresters
C. Part 2: Safety Rules for the Installation and Maintenance of Overhead Electric Supply and Communication Lines
15. Section 20: Purpose, Scope, and Application of Rules
16. Section 21: General Requirements
17. Section 22: Relations between Various Classes of Lines and Equipment
18. Section 23: Clearances
19. Section 24: Grades of Construction
20. Section 25: Loadings for Grades B and C
21. Section 26: Strength Requirements
22. Section 27: Line Insulation
D. Part 3: Safety Rules for the Installation and Maintenance of Underground Electric Supply and Communication Lines
23. Section 30: Purpose, Scope, and Application of Rules
24. Section 31: General Requirements Applying to Underground Lines
25. Section 32: Underground Conduit Systems
26. Section 33: Supply Cable
27. Section 34: Cable in Underground Structures
28. Section 35: Direct-Buried Cable and Cable in Duct Not Part of a Conduit System
29. Section 36: Risers
30. Section 37: Supply Cable Terminations
31. Section 38: Equipment
32. Section 39: Installation in Tunnels
E. Part 4: Work Rules for the Operation of Electric Supply and Communications Lines and Equipment
33. Section 40: Purpose and Scope
34. Section 41: Supply and Communications Systems—Rules for Employers
35. Section 42: General Rules for Employees
36. Section 43: Additional Rules for Communications Employees
37. Section 44: Additional Rules for Supply Employees
F. Appendix A: Photographs of NESC Applications
G. Appendix B: OSHA Standards Related to the NESC Work Rules
H. 1910.268: Telecommunications (Operations and Maintenance) 1910 Subpart R—Special Industries
I. 1910.269 (Includes Appendix A–E): Electric Power Generation, Transmission, and Distribution (Operation and Maintenance) 1910 Subpart R—Special Industries
J. 1926.950 through 1926.960: Power Transmission and Distribution (Construction) 1926 Subpart V—Power Transmission and Distribution
010. PURPOSE
012. GENERAL RULES
013. APPLICATION
014. WAIVER
015. INTENT
016. EFFECTIVE DATE
017. UNITS OF MEASURE
018. METHOD OF CALCULATION
090. PURPOSE
091. SCOPE
092. POINT OF CONNECTION OF GROUNDING CONDUCTOR
093. GROUNDING CONDUCTOR AND MEANS OF CONNECTION
094. GROUNDING ELECTRODES
095. METHOD OF CONNECTION TO ELECTRODE
096. GROUND RESISTANCE REQUIREMENTS
097. SEPARATION OF GROUNDING CONDUCTORS
098. NUMBER 098 NOT USED IN THIS EDITION.
099. ADDITIONAL REQUIREMENTS FOR GROUNDING AND BONDING OF COMMUNICATION APPARATUS
102. APPLICATIONS OF RULES
103. REFERENCED SECTIONS
110. GENERAL REQUIREMENTS
111. ILLUMINATION
112. FLOORS, FLOOR OPENINGS, PASSAGEWAYS, AND STAIRS
113. EXITS
114. FIRE-EXTINGUISHING EQUIPMENT
120. GENERAL REQUIREMENTS
121. INSPECTIONS
122. GUARDING SHAFT ENDS, PULLEYS, BELTS, AND SUDDENLY MOVING PARTS
123. PROTECTIVE GROUNDING
124. GUARDING LIVE PARTS
125. WORKING SPACE ABOUT ELECTRIC EQUIPMENT
126. EQUIPMENT FOR WORK ON ENERGIZED PARTS
127. CLASSIFIED LOCATIONS
128. IDENTIFICATION
129. MOBILE HYDROGEN EQUIPMENT
130. SPEED CONTROL AND STOPPING DEVICES
131. MOTOR CONTROL
132. NUMBER 132 NOT USED IN THIS EDITION
133. SHORT-CIRCUIT PROTECTION
140. GENERAL
141. LOCATION
142. VENTILATION
143. RACKS
144. FLOORS IN BATTERY AREAS
145. ILLUMINATION FOR BATTERY AREAS
146. SERVICE FACILITIES
150. CURRENT-TRANSFORMER SECONDARY CIRCUITS PROTECTION WHEN EXCEEDING 600 V
151. GROUNDING SECONDARY CIRCUITS OF INSTRUMENT TRANSFORMERS
152. LOCATION AND ARRANGEMENT OF POWER TRANSFORMERS AND REGULATORS
153. SHORT-CIRCUIT PROTECTION OF POWER TRANSFORMERS
161. ELECTRICAL PROTECTION
162. MECHANICAL PROTECTION AND SUPPORT
163. ISOLATION
164. CONDUCTOR TERMINATIONS
170. ARRANGEMENT
171. APPLICATION
172. CIRCUIT BREAKERS, RECLOSERS, AND SWITCHES CONTAINING OIL
173. SWITCHES AND DISCONNECTING DEVICES
174. DISCONNECTION OF FUSES
180. SWITCHGEAR ASSEMBLIES
181. METAL-ENCLOSED BUS
191. INDOOR LOCATIONS
192. GROUNDING CONDUCTORS
193. INSTALLATION
202. APPLICATION OF RULES
210. REFERENCED SECTIONS
211. NUMBER 211 NOT USED IN THIS EDITION
212. INDUCED VOLTAGES
213. ACCESSIBILITY
214. INSPECTION AND TESTS OF LINES AND EQUIPMENT
215. GROUNDING OF CIRCUITS, SUPPORTING STRUCTURES, AND EQUIPMENT
216. ARRANGEMENT OF SWITCHES
217. GENERAL
218. VEGETATION MANAGEMENT
220. RELATIVE LEVELS
221. AVOIDANCE OF CONFLICT
222. JOINT USE OF STRUCTURES
223. COMMUNICATIONS PROTECTIVE REQUIREMENTS
224. COMMUNICATION CIRCUITS LOCATED WITHIN THE SUPPLY SPACE AND SUPPLY CIRCUITS LOCATED WITHIN THE COMMUNICATION SPACE
225. ELECTRIC RAILWAY CONSTRUCTION
231. CLEARANCES OF SUPPORTING STRUCTURES FROM OTHER OBJECTS
232. VERTICAL CLEARANCES OF WIRES, CONDUCTORS, CABLES, AND EQUIPMENT ABOVE GROUND, ROADWAY, RAIL, OR WATER SURFACES
233. CLEARANCES BETWEEN WIRES, CONDUCTORS, AND CABLES CARRIED ON DIFFERENT SUPPORTING STRUCTURES
234. CLEARANCE OF WIRES, CONDUCTORS, CABLES, AND EQUIPMENT FROM BUILDINGS, BRIDGES, RAIL CARS, SWIMMING POOLS, AND OTHER INSTALLATIONS
235. CLEARANCE FOR WIRES, CONDUCTORS, OR CABLES CARRIED ON THE SAME SUPPORTING STRUCTURE
236. CLIMBING SPACE
237. WORKING SPACE
238. VERTICAL CLEARANCE BETWEEN CERTAIN COMMUNICATION AND SUPPLY FACILITIES LOCATED ON THE SAME STRUCTURE
239. CLEARANCE OF VERTICAL AND LATERAL FACILITIES FROM OTHER FACILITIES AND SURFACES ON THE SAME SUPPORTING STRUCTURE
240. GENERAL
241. APPLICATION OF GRADES OF CONSTRUCTION TO DIFFERENT SITUATIONS
242. GRADES OF CONSTRUCTION FOR CONDUCTORS
243. GRADES OF CONSTRUCTION FOR LINE SUPPORTS
250. GENERAL LOADING REQUIREMENTS AND MAPS
251. CONDUCTOR LOADING
252. LOADS ON LINE SUPPORTS
253. LOAD FACTORS FOR STRUCTURES, CROSSARMS, SUPPORT HARDWARE, GUYS, FOUNDATIONS, AND ANCHORS
260. GENERAL (SEE ALSO SECTION 20)
261. GRADES B AND C CONSTRUCTION
262. NUMBER 262 NOT USED IN THIS EDITION
263. GRADE N CONSTRUCTION
264. GUYING AND BRACING
270. APPLICATION OF RULE
271. MATERIAL AND MARKING
272. RATIO OF FLASHOVER TO PUNCTURE VOLTAGE
273. INSULATION LEVEL
274. FACTORY TESTS
275. SPECIAL INSULATOR APPLICATIONS
276. NUMBER 276 NOT USED IN THIS EDITION
278. AERIAL CABLE SYSTEMS
279. GUY AND SPAN INSULATORS
301. SCOPE
302. APPLICATION OF RULE
310. REFERENCED SECTIONS
311. INSTALLATION AND MAINTENANCE
312. ACCESSIBILITY
313. INSPECTION AND TESTS OF LINES AND EQUIPMENT
314. GROUNDING OF CIRCUITS AND EQUIPMENT
315. COMMUNICATIONS PROTECTIVE REQUIREMENTS
316. INDUCED VOLTAGE
320. LOCATION
321. EXCAVATION AND BACKFILL
322. DUCTS AND JOINTS
323. MANHOLES, HANDHOLES, AND VAULTS
330. GENERAL
331. SHEATHS AND JACKETS
332. SHIELDING
333. CABLE ACCESSORIES AND JOINTS
341. INSTALLATION
342. GROUNDING AND BONDING
343. FIREPROOFING
344. COMMUNICATION CABLES CONTAINING SPECIAL SUPPLY CIRCUITS
351. LOCATION AND ROUTING
352. INSTALLATION
353. DELIBERATE SEPARATIONS—EQUAL TO OR GREATER THAN 300 MM (12 IN) FROM UNDERGROUND STRUCTURES OR OTHER CABLES
354. RANDOM SEPARATION—SEPARATION LESS THAN 300 MM (12 IN) FROM UNDERGROUND STRUCTURES OR OTHER CABLES
355. ADDITIONAL RULES FOR DUCT NOT PART OF A CONDUIT SYSTEM
360. GENERAL
361. INSTALLATION
362. POLE RISERS—ADDITIONAL REQUIREMENTS
363. PAD-MOUNTED INSTALLATIONS
370. GENERAL
371. SUPPORT AT TERMINATIONS
372. IDENTIFICATION
373. CLEARANCES IN ENCLOSURES OR VAULTS
374. GROUNDING
380. GENERAL
381. DESIGN
382. LOCATION IN UNDERGROUND STRUCTURES
383. INSTALLATION
384. GROUNDING AND BONDING
385. IDENTIFICATION
390. GENERAL
391. ENVIRONMENT
400. PURPOSE
401. SCOPE
402. REFERENCED SECTIONS
410. GENERAL REQUIREMENTS
411. PROTECTIVE METHODS AND DEVICES
420. GENERAL
421. GENERAL OPERATING ROUTINES
422. OVERHEAD LINE OPERATING PROCEDURES
423. UNDERGROUND LINE OPERATING PROCEDURES
430. GENERAL
431. APPROACH TO ENERGIZED CONDUCTORS OR PARTS
432. JOINT-USE STRUCTURES
433. ATTENDANT ON SURFACE AT JOINT-USE MANHOLES
434. SHEATH CONTINUITY
440. GENERAL
441. ENERGIZED CONDUCTORS OR PARTS
443. WORK ON ENERGIZED LINES AND EQUIPMENT
444. DE-ENERGIZING EQUIPMENT OR LINES TO PROTECT EMPLOYEES
445. PROTECTIVE GROUNDS
446. LIVE WORK
447. PROTECTION AGAINST ARCING AND OTHER DAMAGE WHILE INSTALLING AND MAINTAINING INSULATORS AND CONDUCTORS
Title: McGraw-Hill's National Electrical Safety Code (NESC) 2012 Handbook
David J. Marne, P.E., B.S.E.E. is a registered professional electrical engineer. Mr. Marne is a nationally recognized speaker on the National Electrical Safety Code® (NESC®) and he serves on multiple NESC® technical subcommittees. He is company president and senior electrical engineer for Marne and Associates, Inc., in Missoula, Montana, where he specializes in NESC® training and expert witness services. Mr. Marne has more than 29 years of experience in the utility industry and is a senior member of the IEEE.
Description: Designed to be used alongside the Code itself, McGraw-Hill's National Electrical Safety Code® (NESC®) 2012 Handbook provides a rule-by-rule annotation of the NESC® that clarifies potentially confusing Code text and allows you to perform your work safely and confidently. This step-by-step guide explains how to apply and meet the NESC® rules for electrical supply stations and equipment, as well as overhead and underground electric supply and communications lines. Hundreds of illustrations and photos, practical examples, and concise language regarding complicated and controversial issues are included in this expert resource.