ECM Buyers' Guide

national electrical code

Illustrated Catastrophes 

Sep 1, 2007, By Joe Tedesco, NEC Columnist

As usual, never consider the following commentary associated with these photos as a formal interpretation of the National Electrical Code (NEC). Without...

Code Quandaries 

Sep 1, 2007, By Mike Holt, NEC Consultant

All questions and answers are based on the 2005 NEC. Q. Can Type MC cable be installed from fixture to fixture without support above a suspended ceiling?...

Stumped by the Code? 

Aug 1, 2007, By Mike Holt, NEC Consultant

All questions and answers are based on the 2005 NEC. Q. Are there any restrictions on the length of outside conductor (without overcurrent protection)...

Article 230: Services Part 1 

Aug 1, 2007, By Mike Holt, NEC Consultant

Article 230, which consists of seven parts, provides the installation requirements for service conductors and equipment. Parts II, III, and IV address...

Illustrated Catastrophes 

Aug 1, 2007, By Joe Tedesco, NEC Columnist

As usual, never consider the following commentary associated with these photos as a formal interpretation of the National Electrical Code (NEC). Without...

Article 225: Outside Branch Circuits 

Jul 1, 2007, By Mike Holt, NEC Consultant

Article 225 provides installation requirements for outside branch circuits and feeders that run on (or between) structures or poles (Fig. 1). The NEC...

Code Q&A 

Jun 13, 2007, By Mike Holt

Code Quiz 

Jun 13, 2007, By Steven Owen

Eyes Wide Open 

Jun 1, 2007, By Michael Eby, Editor-in-Chief

I just returned home from a visit to the great city of Boston. Although I didn't get to walk down The Freedom Trail or stop in The Paul Revere House,...

Article 215: Feeders 

Jun 1, 2007, By Mike Holt, NEC Consultant

Last month, we looked at branch-circuit requirements in Art. 210. The next logical step up from the branch circuit is the feeder circuit. Thus, Art. 215,...

Illustrated Catastrophes 

Jun 1, 2007, By Joe Tedesco, NEC Columnist

As usual, never consider the following commentary associated with these photos as a formal interpretation of the National Electrical Code (NEC). Without...

What's Wrong Here? 

Jun 1, 2007, By Joe Tedesco, NEC Columnist

How well do you know the Code? Think you can spot violations the original installer either ignored or couldn't identify? Here's your chance to moonlight...

Code Quandaries 

Jun 1, 2007, By Mike Holt, NEC Consultant

All questions and answers are based on the 2005 NEC. Q. Since the neutral is bonded to the case at the meter enclosure, do I still need to bond the neutral...

Code Quiz 

May 29, 2007, By Steven Owen

Code Q&A 

May 29, 2007, By Mike Holt

Code Quiz 

May 14, 2007, By Steven Owen

Code Q&A 

May 14, 2007, By Mike Holt

Code Quiz 

Apr 27, 2007, By Steven Owen

Code Q&A 

Apr 27, 2007, By Mike Holt

Code Quiz 

Apr 13, 2007, By Steven Owen

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