Change Summary
NEC® Text |
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Copyright© 2013 National Fire Protection Association (See NEC for complete text) |
Leviton Comment
Articles 800.180, 770.180, 810.7, 820.180, 830.180 and 840.180 were grouped together because the intent of these articles is very much the same (listed grounding conductor). This grouping makes for a quicker and more user-friendly read of this Pocket Guide. However there are some variances in text. Please reference the 2014 NEC Text for exact language.
Expert Analysis
Section 90.3 permits Chapter 8 to stand alone and is not subject to the requirements of Chapters 1 through 7. When it comes to grounding and bonding, in some instances, this can be a serious issue especially where grounding requirements are different or nonexistent. Although requirements exist that specify when grounding or bonding of a shield, sheath or non–current-carrying metallic members of a cable is required, there was no requirement that devices used should be listed, which can result in poor connections due to questionable installation methods (e.g. wrapping the conductor around a cable sheath) or employing devices that do not have sufficient strength to maintain a solid connection or use materials unsuitable for the application.
Therefore the panel decided to require listed devices ensures the connection meets construction and performance criteria necessary for reliable bonding and grounding. Listed devices or grounding devices that are part of listed equipment comply with UL 467, Grounding and Bonding Equipment. Except for Article 810, common numbering (xxx.180) was selected and aligned with proposals submitted for Articles 770, 800, 820, 830 and 840.