The Electrical Contractor Network

ECN Electrical Forum
Discussion Forums for Electricians, Inspectors and Related Professionals

Books, Tools and Test Equipment for Electrical and Construction Trades

Register Now!

Register Now!

We want your input!


2017 NEC and Related
2017 NEC
Now Available!

Recent Posts
Son of Sparky
by HotLine1
Yesterday at 07:43 PM
Speaking of Plugmold ...
by gfretwell
10/17/16 02:37 PM
Broken battery charger? Check for cobwebs!
by gfretwell
10/17/16 02:30 PM
230 or 345 kV transmission lines?
by annemarie1
10/12/16 01:23 PM
Is this a fix or just a bandaid?
by gfretwell
10/10/16 06:49 PM
New in the Gallery:
12.5A through 0.75mm˛ flex (just out of curiosity)
Shout Box

Top Posters (30 Days)
gfretwell 11
renosteinke 6
HotLine1 6
ghost307 5
sparky 4
Who's Online
0 registered (), 114 Guests and 4 Spiders online.
Key: Admin, Global Mod, Mod
Topic Options
Rate This Topic
#34799 - 02/23/04 03:31 PM 4 wire smokes?
Jim M Offline

Registered: 08/10/01
Posts: 453
Loc: Chestertown, MD, USA
Does anyone have any knowledge about 4 wire smoke detectors? The ones I just saw are wired with 2c w g NM.From the label on the smoke it looks like a 120 hot/neutral, a blue interconnect and a orange wire labeled (-). I have never seen this type of setup before. Can I make this work for standard 3 wire smokes?

The smokes were made by Square D, if this helps.


Work Gear for Electricians and the Trades

Work Gear for Electricians and the Trades
Work Gear for Electricians and the Trades
Arc Flash Clothing, Gloves, KneePads, Tool Belts, Pouches, Tool Carriers, etc. etc....

#34800 - 02/23/04 03:48 PM Re: 4 wire smokes?
Sandro Offline

Registered: 12/30/01
Posts: 449
Loc: Stoney Creek, ON, Canada
A provision for an auxiliary relay contact?

#34801 - 02/24/04 10:51 PM Re: 4 wire smokes?
DougW Offline

Registered: 06/08/03
Posts: 1083
Loc: North Chicago, IL
Possibly some sort of individual identifier cable?

Does the company website have info?


ECN Electrical Forums - sponsored by Electrical Contractor Network - Electrical and Code Related Discussion for Electrical Contractors, Electricians, Inspectors, Instructors, Engineers and other related Professionals