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425.64 Limit Controls
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Each duct heater shall be provided with an integral, automatic-reset temperature-limiting control or controllers to de-energize the circuit or circuits. In addition, an integral independent supplementary control or controllers shall be provided in each duct heater that disconnects a sufficient number of conductors to interrupt heating element current flow. This device shall be manually resettable or replaceable.
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424.64 Equipment for General Use, Limit Controls
Each duct heater shall be provided with an approved, integral, automatic-reset temperature-limiting control or controllers to de-energize the circuit ...
National Electrical Code 2020 of Minnesota > 4 Equipment for General Use > 424 Fixed Electric Space-Heating Equipment > 424.64 Limit Controls
425.64 Equipment for General Use, Limit Controls
Each duct heater shall be provided with an integral, automatic-reset temperature-limiting control or controllers to de-energize the circuit ...
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Limit controls shall be provided in accordance with Sections 5004.8.1 and 5004.8.2 ...
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