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#76648 - 03/05/01 01:25 AM smoke alarm question  
GaryGnu  Offline
Junior Member
Joined: Mar 2001
Posts: 7
MD, USA
I am in the process of finishing a basement. One of the circuits I am using passes through a box that contains a smoke alarm. This smoke alarm is wired using 4 wires (ground/neutral/black/red). The red wire is part of a 14/3 wire that goes upstairs in the house (not sure where). My question is why does this smoke alarm have 2 hot wires (black red)?

Thanks for any help.


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#76649 - 03/05/01 02:02 AM Re: smoke alarm question  
sparky66wv  Offline
Member
Joined: Nov 2000
Posts: 2,236
West Virginia
Black would be the hot wire, red would be a communication wire to set off all of the smoke alarms at once. The detector may have black and orange wires (as well as a white grounded conductor), the black wire would go to the black conductor, the orange wire to the red conductor. The white wire goes to the white grounded conductor and green or bare (if it has any) goes to the green or bare equipment grounding conductor.


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#76650 - 03/05/01 10:51 AM Re: smoke alarm question  
GaryGnu  Offline
Junior Member
Joined: Mar 2001
Posts: 7
MD, USA
The smoke detector actually has a yellow wire which is connected to the red wire on the 14/3. I would like to test these alarms since I had to temporarily disconnect them. How do I accomplish this? Is pressing the test button going to set off the other smoke detectors in the house? Or do I need to blow smoke into the alarm?


#76651 - 03/05/01 03:09 PM Re: smoke alarm question  
sparky66wv  Offline
Member
Joined: Nov 2000
Posts: 2,236
West Virginia
Yes, the yellow in this case would be correct.

The test button on any detector should set off all detectors connected to the system.



[This message has been edited by sparky66wv (edited 03-05-2001).]


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