ECM Buyers' Guide

national electrical code


Code Quiz 

Aug 8, 2005, By Steven Owen

Grounding vs Bonding - Part 8 of 12 

Aug 1, 2005, By Mike Holt, NEC Consultant

Don’t use the equipment grounding conductor for grounding...

Stumped by the Code? 

Aug 1, 2005, By Mike Holt, NEC Consultant

All questions and answers are based on the 2005 edition of the NEC. Q. Where must the system-bonding jumper at a transformer be installed? A. The metal...

Behind the 2005 NEC Changes: 760.61 Listed PLFA Cables 

Aug 1, 2005, By Steven Owen, National Code Seminars

Power limited fire alarm circuits are critical to the safety and well being of building occupants who find themselves in a burning building. During such...

Illustrated Catastrophes 

Aug 1, 2005, 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 

Jul 22, 2005, By Steven Owen

Code Q&A 

Jul 22, 2005, By Mike Holt

Hot Tub Turmoil 

Jul 8, 2005, 

Code Quiz 

Jul 8, 2005, 

Code Q&A 

Jul 8, 2005, By Mike Holt

Grounding vs Bonding - Part 7 of 12 

Jul 1, 2005, By Mike Holt, NEC Consultant

Errors in sizing and installing grounding electrode conductors can cause your entire grounding system to fail...

Code Q&A 

Jun 23, 2005, By Mike Holt

Code Quiz 

Jun 23, 2005, By Steve Owen

Code Quiz 

Jun 8, 2005, By Steven Owen

Code Q&A 

Jun 8, 2005, By Mike Holt

Six Steps to Building a Code-Compliant SRG 

Jun 1, 2005, Edited by John DeDad, Editorial Director

Major power disturbances that originate outside of a building will almost always cause capacitive or inductive coupling, inadvertent contact with conductive...

Illustrated Catastrophes 

Jun 1, 2005, 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...

Grounding vs Bonding - Part 6 of 12 

Jun 1, 2005, By Mike Holt, NEC Consultant

How solid is your understanding of grounding electrode systems?...

Code Quiz 

May 23, 2005, By Steven Owen

Code Q&A 

May 23, 2005, By Mike Holt

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product spotlight

Toroidal power transformers

Feb 8, 2012 8:39 AM

Toroidal power transformers

These toroidal power transformers are designed for medical applications...

View all 2012 Product Spotlights

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Arlington CP9000

Arlington's new 9" diameter ceiling cover plate is the neatest way to cover unused "high hat" cans. With no tools needed, installation couldn't be faster!...

Arlington Gangable Boxes

Designed for new or retrofit applications, these snap-together gangable plastic boxes eliminate the need to construct a multiple-gang steel box out of several individual ones...

Understanding NEC Requirements for Solar Photovoltaic Systems
During this session, Mike Holt will address possible conflicts or confusing NEC requirements, provide tips on proper electrical installation techniques, and discuss the dangers related to improper installations. View this On Demand Webinar!



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