Article 110 provides general requirements for all installations. Section 110.12 is the famous “mechanical implementation” part of the NEC. Repeated criticism from a second. 110.12 Is it not specific enough. It begins with “electrical equipment must be installed in a professional and skillful manner.” But there is no explanation for what this means. We return to the “Use and application” section in Article 90 and read Nec to be “… instructions guide for non -trained persons” (Article 90.2).
Any person “a qualified person” performs work in any trade that knows the meaning of good workmanship. However, SEC’s media note. 110.12 ANSI/NECA XA 2015, the standard for a good manufacturer in electrical construction as a supplier. He also says that there are other ANSI approved installation criteria. Expecting that the qualified person will not wrote some rules to reach something, but instead he will consider his work to be signed and proud to do so well. Even small touches occur to such a person. For example, it runs the EMT and notes a length -working scratch. It turns this scratch into the wall until it faces the frightening part of the EMT. There is no book book that tells him to do this particular thing. He will not do this if scratching is more than just cosmetics; He replaces the damaged part.
Section 110.12 has only three sub -sections. It is important to note that these three do not determine the professional and skillful work and do not set its limits. It is three requirements that can be made logically in another section, but here and fit. For example, unused openings are ugly and shows a weak estimate of alignment and finishing. They are also dangerous. You should close it in largely strong means such as the wall wall (Article 110.12 (A).
The second condition is that the equipment cannot be damaged (Article 110.12 (b)). Details were added, such as “damage” that includes pollutants or damaged due to paint, detergents and other chemicals. You cannot also use bent or broken parts, cut, deteriorate by corrosion, chemical action, or high temperature.
The third requirement applies to cables and connectors (Article 111.12 (c)). This is mostly related to the appropriate support and protection of damage. One aspect of this is any tapes, basic, hanger, equipment, etc. One of the differences that you may see between the DIY installation of the unspecified cable (see Article 334) against the installation by electricity, DIY stabilizer is usually used as flat pins instead of properly sized the casual pins. The result is that the cable jacket is strongly counted and thus was damaged. DIY installer usually cuts this jacket again with a pocket knife and extends the jacket that tries to separate the two pieces, while electrician will use the facilities made for this purpose. The electricity works faster, and better.
This leads us to an important point about doing work in a professional and skillful manner. It takes less time to work in this way, partly because you use specific techniques to do efficiently. Another reason that saves time is to significantly reduce reformulation. In the example of a non -metal cable, DIY stabilizer is likely to fix the conductors, which often means cutting a portion of the cable and trying again. The professional and skill electrician never has this problem.
