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
Parking lot pole light swap....
by gfretwell
Yesterday at 08:46 PM
International Wire Colour Codes
by Tjia1981
10/23/16 12:08 PM
Son of Sparky
by HotLine1
10/20/16 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
New in the Gallery:
12.5A through 0.75mm˛ flex (just out of curiosity)
Shout Box

Top Posters (30 Days)
gfretwell 14
HotLine1 7
ghost307 7
renosteinke 6
Potseal 4
Who's Online
0 registered (), 298 Guests and 4 Spiders online.
Key: Admin, Global Mod, Mod
Topic Options
Rate This Topic
#216432 - 12/16/15 10:25 AM Fire Alarm Question
CRM Offline

Registered: 02/29/04
Posts: 73
Loc: Alberta Canada
Hi all, I have a question regarding the new fire alarm code, CAN/ULC-S524. It says the supply and return conductors of an addressable loop must be in separate raceways or cables. Does anybody know if you can run the signal conductors in one of these raceways or do you need a separate raceway? Thanks for any help.

2014 / 2011 NEC & Related Books and Study Guides
#216433 - 12/16/15 01:01 PM Re: Fire Alarm Question [Re: CRM]
twh Offline

Registered: 03/11/04
Posts: 895
Loc: Regina, Sask.
I don't see anything about that in that standard nor in our code book.

Check with the company that will be doing the verification. Maybe ask the question in an email so the answer is in writing.

#216434 - 12/16/15 03:41 PM Re: Fire Alarm Question [Re: CRM]
ghost307 Offline

Registered: 05/09/05
Posts: 883
Loc: Chicago Illinois USA
Down here in the lower half of the continent the concern is just that the entire system could be compromised if the single raceway is damaged; thus the requirement for a separate raceway.
I've never heard of an issue regarding the signal wiring; just the backbone of the system.

twh is right; an emailed question is probably the best way to handle it.


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