NEC in the Facility

Jan. 24, 2012
Section 110.12 contains arguably the least understood and most commonly violated requirements in the NEC

Section 110.12 contains arguably the least understood and most commonly violated requirements in the NEC. For example, consider 110.12(A), which requires closing unused openings in equipment. If your facility already has this problem nailed, the odds are good you can find dozens of such violations in a tour of any facility picked at random.

You can't close these openings with duct tape or other flimsy material. The closure must provide protection substantially equivalent to that provided by the enclosure. Though the NEC doesn't explicitly state what kind of protection, it means protection from shock and arc flash. So use the standard enclosure plugs to close these openings.

Another "gray area" is the requirement that electrical equipment be "installed in a neat and workmanlike manner." While the NEC doesn't explicitly say the equipment must be maintained that way, common sense tells us there's no point in the NEC's installation requirement if you don't maintain that neatness.

But what does this mean? Although the NEC doesn't say (to understand why it doesn't digress into this area, read 90.1), it does refer the reader to the applicable ANSI/NECA standard. Your best bet is to obtain the standard and follow these three steps:

  1. Make your own checklist to use with PMs and repairs.
  2. Conduct training on methods and finish.
  3. Photograph examples of good workmanship; use for training.

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...

Don't Let Burn-Through Threaten Another Data Center or Utility Project

Get the No Burn-Through Elbow eGuide to learn many reasons why Champion Fiberglass elbows will enhance your data center and utility projects today.

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.