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

Topic Options
Rate This Topic
#54701 - 08/04/05 08:22 PM 12V vs 24V Fire Alarm
cgw Offline
Member
Registered: 07/29/04
Posts: 133
Loc: Rochester NY
Can someone give me the practical difference(s) between 12V and 24V fire alarm systems?
Top
Work Gear for Electricians and the Trades
#54702 - 08/05/05 10:51 AM Re: 12V vs 24V Fire Alarm
Ron Offline
Member
Registered: 03/13/02
Posts: 577
Loc: White Plains, NY
I'm not aware of any major manufacturer of fire alarm systems that use 12V.
_________________________
Ron
Top
#54703 - 08/05/05 03:34 PM Re: 12V vs 24V Fire Alarm
luckyshadow Offline
Member
Registered: 01/04/05
Posts: 305
Loc: Maryland USA
I've never seen a 12 volt system. I have only dealt with two voltages on F/A.
Did repair work on an "old school" 120 volt system and install lots of 24 volt.
Top
#54704 - 08/05/05 04:52 PM Re: 12V vs 24V Fire Alarm
JCooper Offline
Member
Registered: 12/30/02
Posts: 229
Loc: Kendall Park, NJ USA
I don't think I have ever seen a true fire panel with 12vdc output, most of the time a 12vdc panel is a residential burg panel with a fire zone. It is a bit easier to get parts for a 24vdc system, there are very few companies that make a 12vdc horn/strobe, System Sensor is the only one that I can think of off the top of my head. It is also easier to get 24vdc smokes. Is this a residential or commercial installation?
Top
#54705 - 08/05/05 05:07 PM Re: 12V vs 24V Fire Alarm
LK Offline
Member
Registered: 01/21/03
Posts: 1721
Loc: New Jersey
24V system will allow a greater selection of devices, and also allow more devices on each zone.
Top

Featured:

2017 NEC and Related
2017 NEC
Now Available!

Shout Box

Recent Posts
Looking for older post
by sparkyinak
Today at 12:27 AM
License exam
by TRUE POWER
Yesterday at 11:33 PM
Members: Non-Members: Did you know?
by Admin
Yesterday at 02:34 PM
Safety at heights?
by HotLine1
01/21/17 08:51 PM
International Wire Colour Codes
by Texas_Ranger
01/21/17 03:29 PM

Who's Online
0 registered (), 76 Guests and 8 Spiders online.
Key: Admin, Global Mod, Mod
New in the Gallery:
Desk-mounted "power-board"
Top Posters
gfretwell 9066
Trumpy 8560
pauluk 7693
HotLine1 6833
sparky 5545
Member Spotlight
Tom
Tom
Member Since: 01/01/01
Posts: 1069

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