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The primary requirement of Section 110.12 is straightforward but very subjective, simply requiring that the installation be done in a "neat and workmanlike manner." Of course, "neat and workmanlike manner" is not a well-defined term and is subject to interpretation, judgment and opinion.
The informational note that follows 110.12 refers to ANSI/NECA 1, Standard Practices for Good Workmanship in Electrical Contracting, as an accepted industry practice. However, while this is certainly a useful standard, following this standard is not required under the NEC, and even this standard still leaves some room for judgment and opinion.
© Hughes Associates,Inc. 2012