ECM Buyers' Guide

national electrical code


Code Calculations 

Nov 1, 2000, By Mike Holt

Sizing Parallel Conductors...

Factors for Determining Ampacity of Conductors 

Oct 1, 2000, By James Stallcup

Factors for Determining Ampacity of Conductors...

Code Calculations 

Oct 1, 2000, By Mike Holt

Sizing Conductors Based on Temperature Rating...

Code Calculations 

Sep 1, 2000, By Mike Holt

General Conductor Ampacity Requirements...

Characteristics of the Neutral Conductor 

Sep 1, 2000, By James Stallcup

Characteristics of the Neutral Conductor...

Code Calculations 

Aug 1, 2000, By Mike Holt, NEC Consultant

Sizing Outlet Boxes -- Part 2...

The Top 25 Proposed Code Changes for 2002 

Aug 1, 2000, By James Stallcup, Sr.

As the next edition of the NEC begins to take shape, here's a look at the top 25 most important proposed Code changes that will affect you as an electrical professional....

Classifying and Using Class 1, 2, and 3 Circuits 

Aug 1, 2000, By James Stallcup, Sr.

Classifying and Using Class 1, 2, and 3 Circuits...

Code Calculations 

Jul 1, 2000, By Mike Holt, NEC Consultant

Sizing Outlet Boxes—Part 1...

Behind the Equipment Grounding Conductor 

Jul 1, 2000, By James Stallcup, Sr. and James Stallcup, Jr.

Behind the Equipment Grounding Conductor...

Code Calculations 

Jun 1, 2000, By Mike Holt, NEC Consultant

Sizing Raceway -- Part 2...

Designing Electrical Systems for Fire Pumps 

Jun 1, 2000, By James Stallcup, Sr. and James Stallcup, Jr.

Designing Electrical Systems for Fire Pumps...

Code Calculations 

May 1, 2000, By Mike Holt, NEC Consultant

Sizing Raceways -- Part 1...

Using Ungrounded Phase Conductors 

May 1, 2000, By James Stallcup, Sr. and James Stallcup, Jr.

Using Ungrounded Phase Conductors...

Code Calculations 

Apr 1, 2000, By Mike Holt, NEC Consultant

Sizing Pull and Junction Boxes...

Fire-Rated Ceilings: Don't Be Left Hanging 

Apr 1, 2000, By James Stallcup, Sr. and James Stallcup, Jr.

Fire-Rated Ceilings: Don't Be Left Hanging...

Is Gas Pipe Grounding Legal? 

Mar 1, 2000, By James Stallcup, Sr. and James Stallcup, Jr.

Is Gas Pipe Grounding Legal?...

Code Calculations 

Mar 1, 2000, By Mike Holt, NEC Consultant

Voltage Drop -- Part 3...

The Grounded Neutral Conductor - Part 3 of 3 

Feb 1, 2000, By James Stallcup, Sr. and James Stallcup, Jr.

The Grounded Neutral Conductor -- Part 3 of 3...

Code Calculations 

Feb 1, 2000, By Mike Holt, NEC Consultant

Voltage Drop -- Part 2...

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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...

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