Return to the Electrical Wiring Forum | Post a Follow-Up

Smoke Detector and Motion Sensor Code Questions

Posted by mark_anderson_us (My Page) on
Wed, Dec 1, 10 at 18:11

Hi All

Anyone know what code requirements are for linking together smoke detectors and cables to motion sensors for alarm panels? (preferably in Chicago, where it seems everything needs to be in pipe)



Follow-Up Postings:

RE: Smoke Detector and Motion Sensor Code Questions

Smoke detectors and motion sensors do not have dedicated rules in the NEC. State and local building codes typically address the requirements, if any, for such detectors. Your answer will be found locally.

RE: Smoke Detector and Motion Sensor Code Questions

Not sure what you mean by linking smoke detectors and motion sensors.

With alarm systems that I install (Canada) we either run separate, 12vdc smoke detectors and place them near the mandatory mains-wired ones, or use an approved relay that goes at the end of the interconnect chain for the mains-wired smokes. From the relay, we run back to the panel and that provides the smoke detector signal. Advantage is, less stuff stuck to your ceiling, and less smokies to replace when they expire.

As for motion sensors, if you're talking about security ones, they have their own wire (usually) run back to the panel, either station-z (4 wires, untwisted) or cat 5/cat 5e.

RE: Smoke Detector and Motion Sensor Code Questions

To the extent the NEC has anything that might apply it would likely be the low voltage control sections of the code.

 o Post a Follow-Up

Please Note: Only registered members are able to post messages to this forum.

    If you are a member, please log in.

    If you aren't yet a member, join now!

Return to the Electrical Wiring Forum

Information about Posting

  • You must be logged in to post a message. Once you are logged in, a posting window will appear at the bottom of the messages. If you are not a member, please register for an account.
  • Please review our Rules of Play before posting.
  • Posting is a two-step process. Once you have composed your message, you will be taken to the preview page. You will then have a chance to review your post, make changes and upload photos.
  • After posting your message, you may need to refresh the forum page in order to see it.
  • Before posting copyrighted material, please read about Copyright and Fair Use.
  • We have a strict no-advertising policy!
  • If you would like to practice posting or uploading photos, please visit our Test forum.
  • If you need assistance, please Contact Us and we will be happy to help.

Learn more about in-text links on this page here