Mark C. Ode

Fire/Life Safety Columnist and Code Contributor

Mark C. Ode is a staff engineering associate at Underwriters Laboratories Inc., based in Peoria, Ariz. He can be reached at 919.949.2576 and mark.c.ode@us.ul.com.

Articles by Mark C. Ode

March 2007
There are some issues involving installations in the National Electrical Code (NEC) that regularly generate considerable misunderstanding for installers, inspectors and engineers; recently, I was giving a workshop on the changes in the 2005 NEC, and as I was covering the change in Section 230.40, Exception No. READ MORE
February 2007
From both a global environmental and an economic point of view, New Article 626 may be one of the most exciting concepts to ever be proposed for the National Electrical Code (NEC); the proposed electrified truck parking space equipment will provide telephone connections, cable and power for televisions, fax machines, microwaves, coffee pots and a host of other appliances. READ MORE
January 2007
Last month's column discussed getting the most out your conductor ampacity, but the article did not really report the importance that wire terminations have on the final ampere rating of a conductor; many designers and electricians forget to consider the rating of the conductor versus the ability of the combination of the conductor and the conductor connection to provide heat dissipation without d READ MORE
December 2006
The price of copper has been increasing at an incredible rate over the past few years; the reasons for the increase is not an issue that will be discussed here, but the resulting price escalation affects the electrical industry since many of the electrical conductors used in construction are copper. READ MORE
November 2006
The International Electrotechnical Commission (IEC) documents use a totally different nomenclature to describe the electrical potential between phase conductors and earth than the National Electrical Code (NEC). The NEC refers to the electrical potential between phase conductors and normally non-current-carrying metal parts of equipment as grounding. READ MORE
October 2006
Interpreting swimming pool code requirements The May 2005 Code Applications column, “Going For a Swim,” contained information on a major change in Article 680 for the 2005 National Electrical Code (NEC) concerning the construction requirements of fiberglass pools, vinyl-lined pools and concrete pools that contain epoxy-coated rebar. READ MORE
September 2006
Last chance to review and comment The time for commenting on proposals is shortly coming to a close. On Oct. 20, 2006, 5 p.m., EST, the National Fire Protection Association will stop accepting comments on proposals that have been processed for the 2008 National Electrical Code (NEC). READ MORE
August 2006
Every new National Electric Code (NEC) cycle brings issues of national importance to the forefront. Some of these issues have been simmering for a long time at the local municipal level, and others have risen to the surface quickly in response to disasters, such as hurricanes, acts of terrorism and fires. READ MORE
July 2006
Changes involving ground-fault circuit interrupter (GFCI) protection for personnel have been present in every National Electrical Code (NEC) cycle since GFCIs were inserted into the 1962 NEC. The results of the January 2006 NEC Panel actions on proposals for the 2008 NEC state there will be more major changes involving installation requirements for these safety devices. READ MORE

Pages