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

October 2008
Many installations have exposed raceways and electrical equipment of all kinds on rooftops, walls and other direct sunlight applications, since this has been a common installation method for many years. READ MORE
September 2008
Certain changes to the National electrical Code (NEC) take more than a single cycle to accomplish due to the complexity of the issues, changes that may involve more than one NFPA committee, changes that involve more than one NEC panel, changes where another NFPA committee and an NEC panel are involved, or the enormous affect the changes may have on the electrical industry. READ MORE
August 2008
Article 338 of the National Electrical Code (NEC) covers the use, installation and construction specifications of service-entrance (SE) cable. Electricians commonly use these cables for service conductors and for feeders and branch circuits in residential and small commercial installations. READ MORE
July 2008
A seemingly simple change in the 2008 National Electrical Code (NEC)— prompting revisions or deletions of text for municipal, county or state NEC adoption processes relating to the installation of exposed nonmetallic-sheathed (NM) cable in a dwelling unit crawl space—has upset some people in the electrical industry. READ MORE
June 2008
Tamper-resistant receptacles will significantly reduce the number of injuries that result when someone inserts a foreign object into receptacles within a residential occupancy. READ MORE
May 2008
Arc-Fault Circuit Interrupter (AFCI) protection has been a requirement since the 1999 National Electrical Code (NEC), starting as protection for receptacles in bedrooms and then progressing to protection of all outlets in bedrooms with changes in later Code cycles. READ MORE
April 2008
Everyone in the electrical industry, including the electrical apprentice, the journeyman, the master electrician, electrical contractor, electrical engineer, designer, the electrical inspector, et al., seem to use the phrase “neutral conductor.” However, until the 2008 National Electrical Code (NEC), we did not actually have a definition of a neutral. READ MORE
March 2008
Occasionally, a change occurs in the National Electrical Code (NEC), and the ramifications are not realized until after the Code is issued. One such change can be found in Section 210.4(B) in the 2008 NEC. On the surface, the change does not seem to seriously affect electrical installations, and only after an in-depth analysis does the real extent of the change surface. READ MORE
February 2008
After addressing the lighting and exterior area of the premises last month, this month’s article concentrates primarily on internal security of the building, using Article 708 covering critical operations power systems (COPS) in the 2008 National Electrical Code (NEC). READ MORE

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