Based on the 2020 NEC.
Question: Can a line voltage thermostat serve as a disconnecting means for electric baseboard heat?
See answer below.
Answer: Yes
Explanation: Section 424.20(A) in the 2020 NEC permits thermostatically controlled switching devices to be used as a disconnect means if they meet five conditions:
- It has a marked OFF position
- Directly opens all HOT conductors in the OFF position
- Designed so the circuit cannot be energized automatically after the device is placed in the OFF position
- Located within sight of the baseboard heater
- Located in an accessible location (new requirement for 2020 NEC)
Lupacchino is a senior design engineer with Gaylor Electric, Inc. in Noblesville, Ind. and serves as an alternate on NEC Code-Making Panel No. 3. He is currently licensed in more than 80 jurisdictions. He can be reached at [email protected].
About the Author
John Lupacchino
Senior Design Engineer
John began his career in electrical construction as an apprentice and worked his way through the trade. He is currently licensed in more than 80 jurisdictions. With more than 35 years of experience, he now plays a vital role in Gaylor Electric’s Engineering Department, where he serves as a senior design engineer. With a focus on design engineering, quality assurance, and code compliance, he has earned the highest level of respect from industry professionals alike. John currently serves as an alternate on NFPA 70 Code Making Panel No. 3. In addition, he enjoys sharing his electrical knowledge through education. As an Associated Builders and Contractors instructor, he continues to help grow a new generation of high-performing construction leaders.