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


2017 NEC and Related
2017 NEC
Now Available!

Recent Posts
Safety at heights?
by HotLine1
01/21/17 08:51 PM
International Wire Colour Codes
by Texas_Ranger
01/21/17 03:29 PM
Looking for older post
by Texas_Ranger
01/21/17 03:22 PM
Last time to chat here
by Trumpy
01/20/17 11:41 PM
Unsafe Situations
by Trumpy
01/20/17 09:46 PM
New in the Gallery:
Desk-mounted "power-board"
Shout Box

Top Posters (30 Days)
Admin 35
HotLine1 20
Ruben Rocha 17
gfretwell 16
Trumpy 15
Who's Online
1 registered (Ruben Rocha), 96 Guests and 15 Spiders online.
Key: Admin, Global Mod, Mod
Topic Options
Rate This Topic
#89964 - 10/25/04 07:34 AM CO Detectors
John Steinke Offline

Registered: 04/03/01
Posts: 509
Loc: Reno,Nv., USA
Two questions:
1) What is the standard that covers installation of CO detectors in homes?
2) What is the best location? (I have seen the combo fire/co detectors on the market, but I am not convinced that CO and smoke are distributed in the same manner).

2017 / 2014 NEC & Related Books and Study Guides
#89965 - 10/25/04 12:19 PM Re: CO Detectors
Ryan_J Offline

Registered: 08/19/03
Posts: 1355
Loc: West Jordan, Utah, USA
Question 1: NFPA 720.

Question 2: Carbon monoxide has the same vapor density as air (1.0), meaning that it neither sinks nor rises. In my opinion, it is a crap shoot as far as location goes. Here in Utah they are required in new dwelling units, and I typically see the combonation type (c/o plus smoke) installed, so they are always at the ceiling.
Ryan Jackson,
Salt Lake City

#89966 - 10/25/04 04:03 PM Re: CO Detectors
sparkync Offline

Registered: 10/17/02
Posts: 811
Loc: NC
I bought two to go in my home. After reading the instructions on where not to locate them, I had to return them where I bought them, because it said not to put in within certain area near an air return, or near an entrance, near any gas appliance, etc. The way my house is laid out, there was no place for them Maybe another brand might work? Steve

#89967 - 10/25/04 06:04 PM Re: CO Detectors
John Steinke Offline

Registered: 04/03/01
Posts: 509
Loc: Reno,Nv., USA
Thanks, Ryan. I am inclined to place one at sleeping-to-thermostat level, near the beds. After all, aren't we primarily concerned with the risk while we're sleeping?

An earlier experience, with a first-generation model, had nuisance tripping from the "bloom" of gas released when the wall-mounted heater kicked on. I believe that the unit was located too close to the heater, and the tendency of the "bloom" to rise before dispersing contributed to the problem. (The heater has a direct outside air source, as well as a direct vent).


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