A single station smoke detector and alarm shall be installed in the center of the ceiling within the live/work room and receive its power from the electrical system within the live/work room. Wiring to the detector shall be permanent and without a disconnecting switch other than that required for overcurrent protection. A permanent connection to an existing circuit is acceptable. The detector shall be approved by the State Fire Marshal and conform to the California State Fire Marshal Standard 12-72-2. Detectors shall be installed in accordance with the approved manufacturer's instructions. An approved battery-powered smoke detector may be substituted for existing artist live/work spaces. (Prior code § 9.29.1314)