What are the requirements for electrical area classification for areas where fuel gas piping is installed in buildings?
NFPA 54 has no requirements for electrical area classification. That means that there are no electrical area classification requirements for buildings in which fuel gas piping, both propane and natural gas are installed. There is a requirement that gas meters be installed 3 ft from sources of ignition, which are defined in NFPA 54 as: Sources of Ignition. Devices or equipment that, because of their intended modes of use or operation, are capable of providing sufficient thermal energy to ignite flammable gas-air mixtures.
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