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
Safety at heights?
by Trumpy
Today at 05:25 AM
Old Bath Fan
by gfretwell
Today at 01:38 AM
Search Function
by Webmaster
Yesterday at 11:13 PM
Forum Software Upgrade coming soon...
by Webmaster
Yesterday at 09:17 PM
ESA Arc flash course
by frank
Yesterday at 04:25 PM
New in the Gallery:
Desk-mounted "power-board"
Top Posters (30 Days)
Webmaster 30
HotLine1 21
Ruben Rocha 16
Trumpy 13
gfretwell 13
Who's Online
0 registered (), 0 Guests and 210 Spiders online.
Key: Admin, Global Mod, Mod
Topic Options
Rate This Topic
#78502 - 09/30/01 05:59 AM smoke dectors
ken m Offline

Registered: 08/14/01
Posts: 61
Loc: south carolina
i realize the code requires a smoke dect in the sleeping areas. in our areas (S.CAROL)the locals require dectors in the bedrooms so i install them in the bed rms as well as in the general areas and of course all tied together. how do you folks do them and what are the requirements in your areas?
thx. ken m

2017 / 2014 NEC & Related Books and Study Guides
#78503 - 09/30/01 09:10 AM Re: smoke dectors
sparky Offline

Registered: 10/18/00
Posts: 5545
I'm not really that sharp on NFPA 72 ( I do have my 8 hrs to do in Dec) , but here it differes as to the occupancy. i.e.--multi-unit, school , etc.

For our multi-unit's it is a matter of new construction vs. fire code retrofit, as the existing stuff may not always get an interconnect.

In VT if we are using line voltage, it must be with battery BU, the systems must have notification, it gets deeper as U go...

Case in point, a recent inspection had the notification per third party alarm co. timed to a response ( NFPA 25...dunno...) which was not to the satisfaction of the local Fire Chief or State Fire Marshal....

#78504 - 09/30/01 09:39 AM Re: smoke dectors
pauluk Offline

Registered: 08/11/01
Posts: 7693
Loc: Norfolk, England

The U.K. requirement (since 1992) is:

Detectors to be A.C. mains powered
At least one detector per story
All detectors/alarms interconnected
Detectors located no more than 7m (23 ft) from "the door of a room where a fire is likely to start," and no more than 3m (approx. 10 ft) from a bedroom door.

The requirement is part of our Building Regulations, and unlike the electrical regs. compliance is compulsory for new construction (in theory at least).

#78505 - 09/30/01 07:58 PM Re: smoke dectors
Bill Addiss Offline

Registered: 10/07/00
Posts: 4196
Loc: NY, USA

We've got (New Construction) one in every Bedroom, outside in the Hallway and on each floor, all interconnected. Battery Backup not required at this time. In addition a CO detector is required by the bedrooms somewhere and must be AC powered, w/digital display, and of the type that records the total accumulated exposure.

You probably know this is coming, but What kind of rooms are fires likely to start in?


#78506 - 10/01/01 02:33 AM Re: smoke dectors
pauluk Offline

Registered: 08/11/01
Posts: 7693
Loc: Norfolk, England
Originally posted by Bill Addiss:

You probably know this is coming, but What kind of rooms are fires likely to start in?

Yep, I know... It's a very vaguely worded regulation! The kitchen would have to be the most obvious choice, but beyond that it's open to argument.

The 23' leaves plenty of room for maneuver though. In most new British homes that would allow a detector in or near the kitchen and it would be well within that distance of the living room & dining room doors as well.

In small single-story homes, quite often just one detector would be within this range and could be within 10ft of the bedroom doors as well.

On two-story ("storey" in British), there's rarely more than one on aach floor, except for large houses.


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