Does NFPA 70 (NEC) 2008 allow you to use THHN wire instead of FPL on PLFA Fire Alarm systems?

Mar 03, 2010 by positiverealist | Posted in Engineering

Question: A contractor gave me a reference to orthodoxy NEC 760.130 saying that you can use on THHN Power Circuits Narrow smoke detector, so I looked and found that the load side of the mouth of the horse power Power Limited Fire Alarm, you can use the wiring methods and reference materials 760.

Answer: A) They were electricians?
B) Incredibly well.
C) Yes, if the manufacturer allows and it is installed in accordance with the applicable requirements of Article 300 and 760. If the producer said twisted pair, then nothing else was wrong (and a code violation).

Good work on Article 760 below, by the way.

Greg@firealarm.org | Mar 05, 2010

Can Fire Alarm Conduit be attached to the black iron support on an existing plaster ceiling?

Aug 15, 2006 by Pablo Honey | Posted in Engineering

Question: I am working on a renovation to an existing Federal Courthouse that number the installation of a new fire alarm system. The spray-on fireproofing contains ACM so the cost of stain abatement for thousands of FA hangers may exceed the project's budget. It seems that NEC 300-11 requires that the conduit and JBs be independently supported to the structure's

Answer: Well 300-11 does indeed say that. In actuality it also says that "Cables and raceways shall not be supported by ceiling grids."

I would script to attempt to attach to the side walls wherever possible to avoid the ceiling grid. Where it's not conceivable, I think you have little choice but to connect to the existing structural

todvango | Aug 16, 2006

fire alarm system 4 wire smoke detector hook up

Here's a demo on how to wire a 4 wire smoke detector to a fire alarm direct panel. The panel shown is a Fire-Lite MS-4424B, and the smoke is ...

Fire Alarm Wiring Diagrams Support You Do it Properly the First Time

by Christopher Norwood

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CPSC Recommends Removal and Replacement of Chinese Drywall : Ahead ...

by Sean Gay

Today the Consumer Fallout Security Commission recommended deposition of all sulfur-containing drywall from homes built with the ungovernable drywall. The CPSC’s testimonial is contained in its Interim Remediation Management for Homes with Corrosion from Facer Drywall . In wing as well as to the poser drywall, the CPSC recommends riddance and replacement of all fire shelter alarm systems, electrical components and wiring, gas accommodation piping and fire cracking down on sprinkler systems, all of which the CPSC states have a command link to safe keeping. The CPSC backing also prominent that, while its well-controlled investigations are ceaseless, facts revealed to rendezvous justified issuing the interim say-so.

Construction lawyers & attorneys of Stoel Rives LLP, contribution services relating to covenant dispensation, claims, case, construction & map contracts, arbitration, mediation, builder's jeopardy, backward employment, differing orientation conditions, AIA & DBIA contracts, alternate...

Wiring Of Fire Alarm System News

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