Nnnnec article 392 pdf files

National electrical code 2008 edition this edition of nfpa 70, national electrical code, was prepared by the national electrical code committee and acted on by nfpa at its june association technical meeting held june 37, 2007, in boston, ma. Cable tray manual based on the 2014 national electrical code cable tray manual 2014 cable tray manual bline series cable tray systems man1 eaton mark shown is the property of its respective owner. C 399 for date codes beginning with the letter a to protect your warranty, use only enerpac hydraulic oil. Article 352 rigid nonmetallic conduit type rnc wiring. Notice as you read through the various wiring methods. Tray must have an inside available width equal to or greater than the sum of the diameters of the cables, which installed in a single layer.

The remaining articles 378 392 address specific types of raceways. The respective article for the cable type must also be followed. Im sitting in san francisco getting ready for a day of atlas plugging knowing something that julia doesnt know. According to the 2005 national electrical code nec, a cable tray system is.

It was issued by the standards council on july 26, 2007, with an effective date of august. However, this article doesnt apply to communications systems, which is covered in chapter 8, except when article. The following draft of nfpa 70, national electrical code. However, this article does not apply to signal and communications systems as covered in chapters 7 and 8. Metallic cable trays that support electrical conductors shall be grounded as required for conductor enclosures in accordance with 250. Article 300 contains the general requirements for all wiring methods included in the nec. Copies of proposals are published in the nec rop for the 20 annual revision cycle. Repair parts sheet p 391, 1004 p 392, 1005 l1771 rev. We close with article 392, a support system, and the last string articles 394 through 398 for open wiring. The national electrical code nec style manual is prepared under the guidance of the nec technical correlating committee and is used to advise members of the codemaking panels on the required editorial style and arrangement of the nec. Expand your knowledge of the national electrical code with our nec 10 tips series. National electrical code 2008 edition usf college of.

Electrical safety hazards of overloading cable trays osha. You can export a wikipedia page such as an article and save it as a pdf file in several ways. Cable tray size as per national electrical code2002. Available while supply lasts great giveaway to your loyal customers part no. Where only qualified maintenance personnel are available, certain cables are permitted in ladder, ventilated trough, and ventilated channeltype cable trays. Article 392 cable trays wiring methods and materials from pocket guide to the national electrical code 2005. Draft of proposed nfpa 70 2014 edition national electrical. Group 3 articles 348, 350, 352, 392, global issues, chapter 9 tables. Lectures although the tech material will be specifically oriented towards the use of motors and various types of sensors, the instructors will provide support and encouragement to groups. I no of multi core cables less than 2000 volts in the cable tray a 40 awgkcmill 120 sq. This edition of nfpa 70, national electrical code, was prepared by the national. Use of nfpa documents for regulatory purposes should be accomplished through adop. Article 352 rigid nonmetallic conduit type rnc wiring methods and materials from pocket guide to the national electrical code 2005.

Article 392 of the nec provides the basic requirements for installations using cable tray. City of phoenix amendments to the 2008 national electrical code nec approved on april 1, 200. Chapter methods and materials mike holt enterprises. It is intended to be used as a practical working tool to assist in making the nec as clear. A grounded metal enclosure containing factorymounted, bare or insulated conductors, which are usually copper or aluminum bars, rods, or tubes. Article 392 cable trays wiring methods and materials. The following draft of nfpa 70, national electrical code, 2014, incorporates the committee actions on the public and committee proposals that make up the a20 nec report on proposals. Look at the installation and faq section to get more information about that.