NEC in the Facility, June 14, 2011

June 14, 2011
The 2011 NEC is almost 900 pages long, in three-ring binder form. The good news is that compliance is far easier than the size of the NEC might suggest

The 2011 NEC is almost 900 pages long, in three-ring binder form. The good news is that compliance is far easier than the size of the NEC might suggest.

Table 90.3 shows this graphically. The first four chapters apply generally to all installations, and Chapter One is so short it contains only two Articles. Chapters 5, 6, and 7 are the "special" chapters. The requirements pertain to special occupancies, equipment, and conditions, respectively. Chapter 8, which is short, pertains to communications systems. Chapter 9 contains useful tables, and the Annexes contain useful examples and information. With this framework in mind, you can quickly identify where to find the appropriate Code requirements.

For example, say you're installing a transformer and panel to power lighting in a new building. Article 110 is always going to apply, so you begin there. What about Chapter 2 requirements? Look in the table of contents, and you see Art. 220 (branch circuits), Art. 240 (overcurrent protection), and Art. 250, Part V (bonding) apply. You can take a similar approach with Chapters 3 and 4. Since this isn't a "special" installation, you can ignore Chapters 5, 6, and 7.

Voice your opinion!

To join the conversation, and become an exclusive member of EC&M, create an account today!

Sponsored Recommendations

Electrical Conduit Comparison Chart

CHAMPION FIBERGLASS electrical conduit is a lightweight, durable option that provides lasting savings when compared to other materials. Compare electrical conduit types including...

Fiberglass Electrical Conduit Chemical Resistance Chart

This information is provided solely as a guide since it is impossible to anticipate all individual site conditions. For specific applications which are not covered in this guide...

Considerations for Direct Burial Conduit

Installation type plays a key role in the type of conduit selected for electrical systems in industrial construction projects. Above ground, below ground, direct buried, encased...

How to Calculate Labor Costs

Most important to accurately estimating labor costs is knowing the approximate hours required for project completion. Learn how to calculate electrical labor cost.