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

June 2007
Inspectors, manufacturers, contractors and electricians have debated the installation orientation of panelboards and circuit breakers for many years. Should a panelboard be installed only in a vertical position, or can it be installed horizontally? Can the panelboard be installed on its back, or would that be a violation of the National Electrical Code (NEC)? READ MORE
May 2007
Equipotential bonding adjustments for pools in the 2008 NEC   READ MORE
April 2007
How far we have come: READ MORE
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

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