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THE 2005 NATIONAL ELECTRICAL CODE REQUIRES UL EXPOSED RUN (-ER) COMPLIANCE FOR CABLES EXTENDING FROM CABLE TRAYS |
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The recently released National Electrical Code (NEC, 2005) amends the way cable should be extended out of cable trays. Once limited to the use of metal clad (MC) cables or metal conduit, the 2005 Code - specifically Section 725.61 (D) (4) for Power Limited Tray Cable (PLTC), and Section 336.10(7) for Tray Cable (TC) - permits the use of UL Exposed Run (-ER) Compliant cable. 600 Volt Type TC Tray Cables that meet or surpass required crush and impact test criteria as per the 2005 NEC Code, Section 336.10(7) are marked "TC-ER". Type PLTC Cables that are certified to meet crush and impact resistance test requirements are marked "Open Wiring" or "Open Wire" as per the 2005 NEC Code, Section 725.61(D)(4). For both TC Tray Cables and PLTC Cables, the NEC Code now allows unlimited length runs to extend from the tray, assuming the Code requirements for local mechanical protection are observed. (The length of the permitted run depends upon the specific Code adopted by the locality. If the locality continued to conform to the 2002 NEC Code, then there is a 50-ft. length restriction for PLTC cable.) Alpha
Wire Company now provides a solution to this unique application through
the Alpha Wire INDUSTRIAL SERIES: SERIES
F, SERIES M, SERIES P, SERIES
L and SERIES V. |
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| Email: info@alphawire.com | |
| Toll Free: 1-800-52 ALPHA | Telephone: 908-925-8000 | Fax: 908-925-6923 | |
| Europe/UK
Telephone: +44 (0) 800 288 8809 | Europe/UK Fax: +44 (0) 1932 772433
Copyright © 2008 Alpha Wire Company ALL RIGHTS RESERVED.
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