Opinion: Hardwired smoke detectors

Subject:	Hardwired smoke detectors
Code:	Applicable Sections of the Minnesota State Building Code: R317.1.1
Submitted by:	Uniformity Committee
Approved By:	Thomas Joachim, State Building Official
Issue Date:	January 2005
Question:	Are hardwired smoke detectors required in existing areas where no work is performed when a building permit is required on the interior of the building?
Answer:	No. Battery-operated detectors are required. Where work framing is exposed or finishes are removed hardwire smoke detectors are required.
Answer:	No. Where framing is not exposed or finishes are not removed battery operated detectors are allowed to be used.

• Building code
• Accessibility
• Mechanical
• Energy
• Elevator
• Existing buildings
• Manufactured structures

• Item 1b
• Item 2b

• Item 1c
• Item 2c
• Item 3c
• Item 4c
• Item 5c