ECM Buyers' Guide

national electrical code

Stumped by the Code? 

May 1, 2006, By Mike Holt, NEC Consultant

All questions and answers are based on the 2005 NEC. Q. I have six 18-foot metal poles to install in a parking area. Is a ground rod required at each...

Power to the Pump 

May 1, 2006, By Mike Holt, NEC Consultant

One of the principal NEC requirements for circuit protection is that you shut down the equipment rather than let supply conductors melt from overload....

Code Quiz 

Apr 24, 2006, By Steven Owen

Code Q&A 

Apr 24, 2006, By Mike Holt

Code Quiz 

Apr 11, 2006, By Steven Owen

Code Q&A 

Apr 11, 2006, By Mike Holt

Exploring Requirements for Information Technology Equipment 

Apr 1, 2006, By Mike Holt, NEC Consultant

If you've ever seen a shutoff switch located just outside an information technology (IT) room, you may have wondered who in their right mind would install...

Illustrated Catastrophes 

Apr 1, 2006, 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 Quiz 

Mar 26, 2006, By Steven Owen

Code Q&A 

Mar 26, 2006, By Mike Holt

Code Quiz 

Mar 12, 2006, By Steven Owen

Code Q&A 

Mar 12, 2006, By Mike Holt

What's Wrong Here? 

Mar 12, 2006, By Joe Tedesco

Hint: Is this a new type of splice box?...

Illustrated Catastrophes 

Mar 1, 2006, 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...

Applying Article 525 in Amusement Venues 

Mar 1, 2006, By Mike Holt, NEC Consultant

If you do electrical work with temporary events, you obviously need to understand Article 525, which covers the installation of portable wiring and equipment...

Stumped by the Code? 

Mar 1, 2006, By Mike Holt, NEC Consultant

All questions and answers are based on the 2005 NEC. Q. When wiring a circuit breaker, does the Code require supply conductors to terminate to the top...

Code Quiz 

Feb 26, 2006, By Steven Owen

Code Q&A 

Feb 26, 2006, By Mike Holt

What's Wrong Here? 

Feb 26, 2006, By Joe Tedesco

Hint: Use your nose to help sniff out this violation....

Code Quiz 

Feb 11, 2006, By Steven Owen

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