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// CODE SNIPPET

425.64 Limit Controls

National Electrical Code 2020 of Minnesota > 4 Equipment for General Use > 425 Fixed Resistance and Electrode Industrial Process Heating Equipment > 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.

Related Code Sections


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 ...
National Electrical Code 2020 of Minnesota > 4 Equipment for General Use > 425 Fixed Resistance and Electrode Industrial Process Heating Equipment > 425.64 Limit Controls
5004.8 Hazardous Materials—General Provisions, Limit Controls
Limit controls shall be provided in accordance with Sections 5004.8.1 and 5004.8.2 ...
Minnesota Fire Code 2015 > 50 Hazardous Materials—General Provisions > 5004 Storage > 5004.8 Limit Controls
5004.8 Hazardous Materials—General Provisions, Limit Controls
Limit controls shall be provided in accordance with Sections 5004.8.1 and 5004.8.2 ...
2020 Minnesota State Fire Code > 50 Hazardous Materials—General Provisions > 5004 Storage > 5004.8 Limit Controls
5005.1.4 Hazardous Materials—General Provisions, Limit Controls
Limit controls shall be provided in accordance with Sections 5005.1.4.1 through 5005.1.4.4 ...
Minnesota Fire Code 2015 > 50 Hazardous Materials—General Provisions > 5005 Use, Dispensing and Handling > 5005.1 General > 5005.1.4 Limit Controls
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