ECM Buyers' Guide

national electrical code


Code Quiz 

Oct 24, 2005, By Steven Owen

When grounding branch circuits – with respect to grounding requirements for receptacles and fixed equipment – in patient care areas of hospitals (critical care or general care areas), which of the following statements is correct?...

Code Quiz 

Oct 7, 2005, By Steven Owen

A small strip mall consists of the following 10 tenants: a pharmacy; a 24-hour emergency medical treatment center, which provides a limited amount of critical care; and eight different retail shops. The common service disconnecting means for the entire group of tenants is equipped with ground-fault protection (one service and 10 feeders)...

Code Q&A 

Oct 7, 2005, By Mike Holt

What's Wrong Here? 

Oct 7, 2005, By Joe Tedesco

Hint: Was there ever a device box?...

Grounding vs Bonding - Part 10 of 12 

Oct 1, 2005, By Mike Holt, NEC Consultant

Does the NEC require you to ground piping systems and structural steel? Be careful how you answer this question....

Behind the 2005 NEC Changes: Art. 409 Industrial Control Panels 

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

Covering industrial control panels intended for general use and operating at 600V or less, including those without an appropriate third-party listing,...

Code Q&A 

Sep 23, 2005, By Mike Holt

Code Quiz 

Sep 23, 2005, By Steven Owen

When installing a Combustible Gas Detection System (in industrial establishments with restricted public access, and using qualified personnel to service the installation) as a protection technique in a Class I hazardous (classified) location of Article 501, or a Zone location of Article 505, all but which of the following items shall be documented?...

What's Wrong Here? 

Sep 23, 2005, By Joe Tedesco

Hint: This green light means “stop.”...

Code Quiz 

Sep 8, 2005, By Steven Owen

Code Q&A 

Sep 8, 2005, By Mike Holt

Grounding vs Bonding - Part 9 of 12 

Sep 1, 2005, By Mike Holt, NEC Consultant

Do you know when an isolated ground is appropriate and how to properly install it?...

Stumped by the Code? 

Sep 1, 2005, By Mike Holt, NEC Consultant

All questions and answers are based on the 2005 NEC. Q. Where are hospital-grade receptacles required? A. Receptacles for inpatient sleeping beds or procedure...

Illustrated Catastrophes 

Sep 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...

IEEE makes its articles easier to find online 

Aug 24, 2005, 

New Yahoo service helps users search the “deep Web”...

What's Wrong Here? 

Aug 23, 2005, By Joe Tedesco

Hint: Cords and cables shall not be used as a substitute...

Code Q&A 

Aug 23, 2005, By Mike Holt

Code Quiz 

Aug 23, 2005, By Steven Owen

Code Q&A 

Aug 8, 2005, By Mike Holt

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what's wrong here?

What's Wrong Here?

Feb 2, 2012 7:54 PM

What's Wrong Here?

Jan 19, 2012 4:06 PM

What's Wrong Here?

Jan 5, 2012 11:53 AM

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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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