110.1 scope of Article 100
This article covers the general Requirements for electrical
installations.
110.2 equipment approvals
Conductors and equipment can be installed only if there are approved
by AHJ.
For more understanding of terms “approval”, Please review the
following posts:
110.3 equipment installation
Equipment must be installed in accordance with any instructions
included in their listing or labeling requirements otherwise it will
be a violation of the code.
For more understanding of terms “listing and labeling”, please review
the following posts:
to read more please follow the below link:
http://alihassanelashmawy.blogspot.com/2012/01/nec-article-110-part-one.html