Smoke Detector Wiring - Connecting Multiple Runs Smoke detector wiring. How to connect multiple runs to a single fire alarm zone. These homes typically have plenty of attic space across the whole house, and smoke alarm wiring can be looped from one detector to the next pretty easily. With some floor plans, smoke alarm placement can make running a single smoke loop difficult if not How to Install a Hardwired Smoke Alarm - AC Power and In How to Install a Hardwired Smoke Alarm – Part 1 I described how the smoke alarm in the finished basement was disabled and improperly concealed in a ceiling crawl space in violation of the Building Codes. The scope of work for this project is to: Remove the old smoke detector and ceiling electrical box.Update: Kidde Pi2010 and Pi9010 RecallThe U.S. Consumer Product Safety Commission issued a recall notice on March 21, 2018 for units manufactured between 2016 Sep. 10 through 2017 Oct..Hardwired Smoke Alarm Wiring DiagramIn How to Install a Hardwired Smoke Alarm – Part 1 I described how the smoke alarm in the finished basement was disabled and improperly concealed i..Smoke Alarm Wiring: NM-B 14/3 Versus NM-B 14/2 CableBefore I begin wiring the new smoke alarm, I’ll take a moment to explain the two types of electrical cable that I’ll be using-B 14/3 wire means..120VAC Branch Circuit Smoke Alarm WiringA new run of NM-B 14/2 cable is installed between the octagonal ceiling box and a convenient junction box on the wall about 10 feet away. The junct..Smoke Alarm on Unswitched Branch Circuit Also Used For Power and LightingUpdate in response to a reader question about how to wire a smoke alarm on branch circuit with a light. The benefit is if the light isn’t working i..