What's Wrong Here?
Nov 23, 2004, By Joe Tedesco
Hint: Does Art. 314, as related to box size, apply to this motor terminal housing?...
Code Quiz
Nov 8, 2004, By Steven Owen
Code Q&A
Nov 8, 2004, By Mike Holt
What's Wrong Here?
Nov 8, 2004, By Joe Tedesco
Hint: Where's the listed or approved symbol on this extension cord?...
2005 Code Changes
Nov 1, 2004, By Mike Holt, NEC Consultant, with introduction by EC&M staff
Has it already been three years? For some of you who wait with bated breath for every edition of the National Electrical Code, the 2005 NEC probably couldn't...
Everything You Need to Know About Switches, and More
Nov 1, 2004, By Mike Holt, NEC Consultant
Just like the receptacle, which was covered in this column last month, switches are a common element in everyday life. You can find them at work, in public,...
Understanding the Basics of Delta Transformer Calculations
Nov 1, 2004, By Mike Holt, NEC Consultant
Transformer configuration names like and derive from the way the windings are connected inside the transformer. These connections determine the way the...
The Almighty Code
Nov 1, 2004, By Michael Eby, Editor-in-Chief
With its 50th edition about to hit the streets, the NEC has now seen more revisions than a lot of electrical industry professionals have celebrated birthdays,...
What's Wrong Here?
Oct 22, 2004, By Joe Tedesco
Hint: This is a "hot" receptacle in more ways than one....
Code Q&A
Oct 22, 2004, By Mike Holt
Code Quiz
Oct 22, 2004, By Steven Owen
Code Q&A
Oct 8, 2004, By Mike Holt
Code Quiz
Oct 8, 2004, By Steven Owen
What's Wrong Here?
Oct 8, 2004, By Joe Tedesco
Hint: The conduit and other raceway at the Park Street MBTA station in Boston is separated where passing through the sleeve to the station below....
Commercial Load Calculations
Oct 1, 2004, By Mike Holt, NEC Consultant
Knowing how to correctly size loads in commercial applications is an essential skill for electricians...
Article 406: Receptacles
Oct 1, 2004, By Mike Holt, NEC Consultant
You might be surprised to learn just how many rules are associated with these simple devices...
Code Calculations
Sep 23, 2004, By Mike Holt
Code Q&A
Sep 23, 2004, By Mike Holt



































