Utah began enforcement of the 2008 National Electrical Code statewide beginning on January 1, 2009. In keeping with past electrical code adoptions, Utah adopted the NEC without amendments, including the expanded application of AFCI protection and tamper resistant receptacles in dwellings.
While adoption without amendment of the most recent edition of the National Electrical Code benefits all construction in the state because of consistent requirements, there is a point of confusion for dwellings. The State has also adopted the 2006 International Residential Code (IRC) in its entirety, including the electrical chapters. With the 2006 IRC containing the residential requirements from the 2005 NEC, there is confusion over which regulations apply. Obviously, the disparity has major implications in application of AFCI protection for most circuits in a dwelling and requirements for temper resistant receptacles. Under the worst case scenario, a jurisdiction could enforce the 2008 NEC for apartments, condominium, and other multi-family dwellings, but revert to the 2005 NEC provisions found in the 2006 IRC for one-family and two-family dwellings. Discussions have not resolved this conflict as of this writing. The Utah Building Code web site is http://www.dopl.utah.gov/programs/ubc/.
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