Mark C. Ode

Fire/Life Safety Columnist and Code Contributor

Mark C. Ode is a lead engineering associate for Energy & Power Technologies at Underwriters Laboratories Inc. and can be reached at 919.949.2576 and

Articles by Mark C. Ode

December 2011
Hurricane season is over, and the inundation of floodwaters in many parts of the country has likely receded by now. However, evaluating electrical equipment that has been subjected to water and determining whether to recondition the equipment or replace it remains a serious issue. READ MORE
November 2011
Arc-fault circuit interrupter (AFCI) protection was originally proposed for the 1996 National Electrical Code (NEC) by the Electronic Industry Association, but it failed to receive enough votes during the adoption process. The electronic and electrical industry spent time and money and used extremely qualified technical experts to develop and test AFCI circuit breakers. READ MORE
September 2011
Most electrical equipment requires physical connection to electrical conductors as a major part of the installation process. READ MORE
August 2011
As part of the development of the low-voltage lighting power-grid system, coverage and acceptance of the new system within the standards community becomes paramount, since this product is new and innovative. READ MORE
July 2011
There is a new technology using low-voltage lighting power distribution at 30 volts (V) or less where the suspended ceiling grid is a lighting power distribution system. Article 410, covering luminaires, and Article 411, covering low-voltage lighting systems at 30V or less, are the two primary lighting installation articles in the National Electrical Code (NEC) pertaining to this new technology. READ MORE
June 2011
In the past few years, hundreds of thousands of solar photovoltaic (PV) systems have been installed for residential (dwelling) units, commercial buildings, industrial facilities and utility companies. Many have been subsidized by grants from utility companies as well as by local, county, state and federal tax rebates. READ MORE
May 2011
For the 2011 National Electrical Code (NEC) process, Code-Making Panel 15 received many proposals recommending changes to Article 517. These proposals were intended to coordinate and correlate with changes to the 2010 NFPA 99 document. READ MORE
March 2011
NFPA 101, the Life Safety Code, and the International Building Code (IBC) require emergency lighting in all commercial and industrial buildings to facilitate emergency egress of people from the building and to reduce the possibility of panic in buildings during the exiting of large numbers of people during an emergency. READ MORE
February 2011
As I discussed in last month’s column, Article 310, covering conductors for general wiring, has been totally rewritten for the 2011 National Electrical Code (NEC). This article is now divided into three parts: Part I covers general requirements, Part II covers installations of conductors, and Part III covers construction specifications for conductors. READ MORE