IEEE C2 2006

$102.92

National Electrical Safety Code 2007 Edition

Published By	Publication Date	Number of Pages
IEEE	2006	373

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Description

– Inactive – Superseded. This standard covers basic provisions for safeguarding of persons from hazards arising from the installation, operation, or maintenance of 1) conductors and equipment in electric supply stations, and 2) overhead and underground electric supply and communication lines. It also includes work rules for the construction, maintenance, and operation of electric supply and communication lines and equipment. The standard is applicable to the systems and equipment operated by utilities, or similar systems and equipment, of an industrial establishment or complex under the control of qualified persons. This standard consists of the introduction, definitions, grounding rules, list of referenced and bibliographic documents, and Parts 1, 2, 3, and 4 of the 2007 Edition of the National Electrical Safety Code.

PDF Catalog

PDF Pages	PDF Title
1	C2-2007
3	National Electrical Safety Code
5	Foreword
9	Standards Committee Membership
14	Contents
35	Letter symbols for units
37	Section 1. Introduction to the National Electrical Safety Code 010. Purpose 011. Scope 012. General rules 013. Application
38	014. Waiver 015. Intent
39	016. Effective date 017. Units of measure
40	018. Method of calculation
67	Part 1. Rules for the Installation and Maintenance of Electric Supply Stations and Equipment Section 10. Purpose and scope of rules 100. Purpose 101. Scope 102. Application of rules 103. Referenced sections
68	Section 11. Protective arrangements in electric supply stations 110. General requirements
70	111. Illumination
73	112. Floors, floor openings, passageways, and stairs 113. Exits
74	114. Fire-extinguishing equipment
75	Section 12. Installation and maintenance of equipment 120. General requirements 121. Inspections 122. Guarding shaft ends, pulleys, belts, and suddenly moving parts 123. Protective grounding
76	124. Guarding live parts
87	125. Working space about electric equipment
88	126. Equipment for work on energized parts 127. Classified locations
91	128. Identification 129. Mobile hydrogen equipment
92	Section 13. Rotating equipment 130. Speed control and stopping devices 131. Motor control
93	132. Number 132 not used in this edition. 133. Short-circuit protection
94	Section 14. Storage batteries 140. General 141. Location 142. Ventilation 143. Racks 144. Floors in battery areas 145. Illumination for battery areas 146. Service facilities
96	Section 15. Transformers and regulators 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
97	153. Short-circuit protection of power transformers
98	Section 16. Conductors 160. Application 161. Electrical protection 162. Mechanical protection and support 163. Isolation 164. Conductor terminations
99	Section 17. Circuit breakers, reclosers, switches, and fuses 170. Arrangement 171. Application 172. Circuit breakers, reclosers, and switches containing oil 173. Switches and disconnecting devices 174. Disconnection of fuses
101	Section 18. Switchgear and metal-enclosed bus 180. Switchgear assemblies
102	181. Metal-enclosed bus
104	Section 19. Surge arresters 190. General requirements 191. Indoor locations 192. Grounding conductors 193. Installation
105	Part 2. Safety Rules for the Installation and Maintenance of Overhead Electric Supply and Communi… Section 20. Purpose, scope, and application of rules 200. Purpose 201. Scope 202. Application of rules
106	Section 21. General requirements 210. Referenced sections 211. Number 211 not used in this edition. 212. Induced voltages 213. Accessibility 214. Inspection and tests of lines and equipment
107	215. Grounding of circuits, supporting structures, and equipment
109	216. Arrangement of switches 217. General
111	218. Vegetation management
112	Section 22. Relations between various classes of lines and equipment 220. Relative levels
113	221. Avoidance of conflict 222. Joint use of structures
114	223. Communications protective requirements 224. Communication circuits located within the supply space and supply circuits located within th…
115	225. Electric railway construction
117	Section 23. Clearances 230. General
121	231. Clearances of supporting structures from other objects
122	232. Vertical clearances of wires, conductors, cables, and equipment above ground, roadway, rail,…
134	233. Clearances between wires, conductors, and cables carried on different supporting structures
145	234. Clearance of wires, conductors, cables, and equipment from buildings, bridges, rail cars, sw…
170	235. Clearance for wires, conductors, or cables carried on the same supporting structure
194	236. Climbing space
198	237. Working space
199	238. Vertical clearance between certain communications and supply facilities located on the same …
201	239. Clearance of vertical and lateral facilities from other facilities and surfaces on the same …
207	Section 24. Grades of construction 240. General 241. Application of grades of construction to different situations
208	242. Grades of construction for conductors
212	243. Grades of construction for line supports
213	Section 25. Loadings for Grades B and C 250. General loading requirements and maps
229	251. Conductor loading
230	252. Loads on line supports
232	253. Load factors for structures, crossarms, support hardware, guys, foundations, and anchors
235	Section 26. Strength requirements 260. General (see also Section 20) 261. Grades B and C construction
245	262. Number 262 not used in this edition. 263. Grade N construction
247	264. Guying and bracing
249	Section 27. Line insulation 270. Application of rule 271. Material and marking 272. Ratio of flashover to puncture voltage 273. Insulation level
250	274. Factory tests 275. Special insulator applications 276. Number 276 not used in this edition. 277. Mechanical strength of insulators
251	278. Aerial cable systems 279. Guy and span insulators
253	28. Section number 28 not used in this edition. 29. Section number 29 not used in this edition.
255	Part 3. Safety Rules for the Installation and Maintenance of Underground Electric Supply and Comm… Section 30. Purpose, scope, and application of rules 300. Purpose 301. Scope 302. Application of rules
256	Section 31. General requirements applying to underground lines 310. Referenced sections 311. Installation and maintenance 312. Accessibility 313. Inspection and tests of lines and equipment
257	314. Grounding of circuits and equipment 315. Communications protective requirements
258	316. Induced voltage
259	Section 32. Underground conduit systems 320. Location
260	321. Excavation and backfill
261	322. Ducts and joints 323. Manholes, handholes, and vaults
265	Section 33. Supply cable 330. General 331. Sheaths and jackets 332. Shielding 333. Cable accessories and joints
267	Section 34. Cable in underground structures 340. General 341. Installation
268	342. Grounding and bonding 343. Fireproofing
269	344. Communication cables containing special supply circuits
270	Section 35. Direct-buried cable 350. General
271	351. Location and routing
272	352. Installation
273	353. Deliberate separations—Equal to or greater than 300 mm (12 in) from underground structures o… 354. Random separation—Separation less than 300 mm (12 in) from underground structures or other c…
276	Section 36. Risers 360. General 361. Installation 362. Pole risers—Additional requirements 363. Pad-mounted installations
277	Section 37. Supply cable terminations 370. General 371. Support at terminations 372. Identification 373. Clearances in enclosures or vaults 374. Grounding
278	Section 38. Equipment 380. General 381. Design
279	382. Location in underground structures 383. Installation 384. Grounding and bonding 385. Identification
280	Section 39. Installation in tunnels 390. General 391. Environment
281	Part 4. Rules for the Operation of Electric Supply and Communications Lines and Equipment Section 40. Purpose and scope 400. Purpose 401. Scope 402. Referenced sections
282	Section 41. Supply and communications systems—Rules for employers 410. General requirements
286	411. Protective methods and devices
288	Section 42. General rules for employees 420. Personal general precautions
291	421. General operating routines
292	422. Overhead line operating procedures
293	423. Underground line operating procedures
295	Section 43. Additional rules for communications employees 430. General 431. Approach to energized conductors or parts
296	432. Joint-use structures 433. Attendant on surface at joint-use manhole
297	434. Sheath continuity
298	Section 44. Additional rules for supply employees 440. General 441. Energized conductors or parts
309	442. Switching control procedures
310	443. Work on energized lines and equipment
312	444. De-energizing equipment or lines to protect employees
313	445. Protective grounds
314	446. Live work
315	447. Protection against arcing and other damage while installating and maintaining insulators and…
317	Appendix A—Unform system of clearances adopted in the 1990 Edition: Reference rules 232, 233, and 234
323	Appendix B—Uniform clearance calculations for conductors under ice and wind conditions adopted in the 2007 Edition: Rules 230A, 232A, 233A1a(3), 234A1, 235C2b(1)(c), Definitions
326	Appendix C—Example applications for Rule 250C Tables 250-2 and 250-3
337	Appendix D—Determining maximum anticipated per-unit overvoltage factor (T) at the worksite
338	Appendix E—Bibliography
343	Index
365	Procedure for revising the National Electrical Safety Code
367	Time schedule for the next revision of the National Electrical Safety Code
368	Working Group assignments and activities for the 2012 Edition Subcommittee 1, Coordination (SC1) Subcommittee 2, Grounding Methods (SC2) Subcommittee 3, Electric Supply Stations (SC3)
369	Subcommittee 4, Clearances—Overhead Lines (SC4) Subcommittee 5, Overhead Lines—Strength and Loadings (SC5)
372	Subcommittee 7, Underground Lines (SC7) Subcommittee 8, Work Rules (SC8)