Code Q&A: Voltage Limitations for Grouping Snap Switches in Enclosures
Question: A snap switch shall not be grouped or ganged in enclosures with other snap switches unless they are arranged so that the voltage between adjacent devices does not exceed _____ volts.
a) 200
b) 300
c) 400
d) 600
See answer below.
Answer: b) 300
Per Sec. 406.38(B): "Snap switches shall not be grouped or ganged in enclosures with other snap switches, receptacles, or similar devices unless they are arranged so that the voltage between adjacent devices does not exceed 300 volts."
About the Author
Ryan JacksonRyan Jackson
Ryan Jackson is a National Electrical Code instructor and textbook author in the Salt Lake City, Utah area. He is also a technical consultant for the Steel Tube Institute. He is a member of Code-Making Panels 3 and 17 for the National Electrical Code and serves on several technical committees for UL Standards and Engagement. He is certified as an inspector in electrical, building, mechanical, and plumbing codes, and has taught the NEC and NFPA 70E at the national level over the last three decades.