Manholes: What Does The '99 NEC Have To Say?
May 1, 1999, By Fred Hartwell, Senior Editor
What do you need to know about the new Part D of Art. 370, now that the '99 NEC covers manholes for the first time?...
Code Forum
May 1, 1999, By Fred Hartwell, Senior Editor
Sharing Space Over Panels: OK If Safety Issues Addressed...
How to Play Zone Defense in Hazardous Locations
May 1, 1999, By John Paschal, Jr., P.E.
What are the differences between the Zone and Division systems in hazardous (classified) locations? Here is what you need to know....
Code Rules for Low-Voltage Lighting
Apr 1, 1999, Hartwell, Frederic P.
A new Code article covering lighting systems operating at 30V or less will modify some and help standardize other low-voltage lighting designs. Additional...
Code Forum
Feb 1, 1999, By Frederic P. Hartwell, Senior Editor
Wire Fill Limitations For Class 2 Circuits...
Can Someone Refresh my Memory?
Feb 1, 1999, Edited by Robert J. Lawrie
One of my electricians asked if it was a Code violation to install a 200A-rated, 42-circuit-load center, main lugs only, with protection consisting of a 100A switch/circuit breaker....
Illustrated Changes In The 1999 NEC — Part 4 of 4
Dec 1, 1998, By Fred Hartwell, Senior Editor
A new NEC is on tap, with major changes in how the document presents the material, even changing to a new full-page format....
Illustrated Changes In The 1999 NEC — Part 3 of 4
Nov 1, 1998, By Fred Hartwell, Senior Editor
A new NEC is on tap, with major changes in how the document presents the material, even changing to a new full-page format....
Illustrated Changes In The 1999 NEC — Part 2 of 4
Oct 1, 1998, By Fred Hartwell, Senior Editor
A new NEC is on tap, with major changes in how the document presents the material, even changing to a new full-page format....
1999 NEC Change Makes MI Cables More Affordable
Oct 1, 1998, By EC&M Staff
The revision of Art. 426-28 of the 1999 NEC exempts mineral-insulated (MI) metal-sheathed cables embedded in noncombustible mediums (such as cement or...
Illustrated Changes in the 1999 NEC — Part 1 of 4
Sep 1, 1998, By Fred Hartwell, Senior Editor
A new NEC is on tap, with major changes in how the document presents the material, even changing to a new full-page format....
Learning The NEC: Ten Tips
Sep 1, 1998, By Mark Lamendola, Technical Editor
The accident report shows "Code violation" as the cause again. Your boss needs suggestions. Here are some that will work....
Natural Gray Isn't Gray
Feb 1, 1998,
Code recognition for "natural gray" neutral insulation doesn't mean "gray" insulation.Recently, a large industrial enterprise asked us, after an inspector...
Hazardous Locations-Articles 500-505 (Part 2)
Feb 1, 1998, Frederic P. Hartwell
Choose the best answer:1. Assume qualified engineering staff and well-trained electrical maintenance personnel. How could they, as a practical matter,...
Transfer switches and the '96 NEC: what you need to know
Nov 1, 1996, Hartwell, Frederic P.
New NEC changes allow for increased design flexibility in hospital essential electrical systems through the use of more transfer switches.Not all Code...
NEC survives ANSI appeal
Aug 1, 1996,
He said that, under the rules, a panel statement need not be either technical or comprehensive. He also noted that the council decision pointing to panel...
