National Electrical Installation Standards

Standards as High as Your Own

Thursday, December 1, 2022


Dear Code Question of the Day, does the code allow a cord and plug connection to a fixed in place furnace? It appears that if the furnace is listed for that application, that it would be acceptable. I don't know how many, if any, manufacturers would approve that type of installation. Thank you for the forum, I look forward to reading it every morning! Thank You, Jerry Davidson


Hi Jerry, glad to hear you are enjoying the Code Question of The Day. Regarding cord and plug connection of a furnace, it may be permitted depending on the equipment. Additionally, there a few conditions that need to be met to achieve compliance with this type of installation. Here are some code Sections that may help in determining if it would be permitted:

  • Section 400.10(7), (8), & (10) would allow for the cord and plug connection of a furnace.
  • Section 422.16(A)(2) addresses/permits the use of cord connection of general appliances fixed in place if they the  appliance is identified for flexible cord connection.
  • Section 422.31(C) generally permits the use of a Cord and Plug connection for an appliance disconnect.
  • Furnaces have an electric blower motor, Section 422.31(C) and 430.109(F) provides guidance on when a cord connection can be used as the disconnecting means for appliances with motor loads.

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