ECN Electrical Forum - Discussion Forums for Electricians, Inspectors and Related Professionals
ECN Shout Chat
Top Posters(30 Days)
Potseal 10
Recent Posts
Old decora style outlets
by Lostazhell. 04/22/17 07:59 PM
Dimmable LED 2x4 lay in fixtures
by gfretwell. 04/22/17 01:14 PM
Permit Snafus...AHJs and Contractors Jump in
by gfretwell. 04/22/17 01:11 PM
How do you find a good employee?
by HotLine1. 04/22/17 10:44 AM
Electrode boilers question
by SteveFehr. 04/21/17 08:32 AM
New in the Gallery:
SE cable question
Popular Topics(Views)
234,487 Are you busy
169,144 Re: Forum
162,495 Need opinion
Who's Online Now
0 registered members (), 55 guests, and 11 spiders.
Key: Admin, Global Mod, Mod
Previous Thread
Next Thread
Print Thread
Rate This Thread
#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.


2017 / 2014 NEC & Related Books and Study Guides

#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.


-Virgil
Residential/Commercial Inspector
5 Star Inspections
Member IAEI

#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).]


-Virgil
Residential/Commercial Inspector
5 Star Inspections
Member IAEI


Member Spotlight
Admin
Admin
NY, USA
Posts: 3,439
Joined: October 2000
Show All Member Profiles 
Featured:

2017 NEC and Related
2017 NEC
Now Available!

Shout Box
Powered by UBB.threads™ PHP Forum Software 7.6.0
Page Time: 0.010s Queries: 14 (0.002s) Memory: 0.7581 MB (Peak: 0.8909 MB) Zlib enabled. Server Time: 2017-04-23 15:48:43 UTC