Re: Fire Wire Solid vs. Stranded

[Jim <alarminex@xxxxxxx>]

On Friday, October 30, 2015 at 8:04:09 AM UTC-4, ABLE1 wrote:
> On 10/30/2015 12:33 AM, Jim wrote:
> > On Thursday, October 29, 2015 at 6:11:38 PM UTC-4, ABLE1 wrote:
> >> Hey all,
> >>
> >> I just found out that apparently Stranded wire FPLR etc. is available
> >> and is acceptable in wiring of fire alarm systems.
> >>
> >> Well that just makes my brain hurt.
> >>
> >> It may have been OK per code for sometime or forever but I just became
> >> aware.
> >> I always use solid and I think even after this new info will continue so
> >> it should not make a difference.  I just did not think it was allowed as
> >> per code.
> >>
> >> Anyone else have input on this??
> >>
> >> Educated me!!!
> >>
> >> Thanks,
> >>
> >> Les
> >
> > I never heard about stranded FPLR wire. But you're feeling the same way I felt the first time I saw the "new" smoke detectors that allow two wires under the same screw terminal.
> >
> > Do you know that there is 22 gage FPLR wire? And do you know where it can be used? ...... on a fire loop or on a keypad run or where it is
> > and is not allowed? Also, is it specified anywhere exactly what kind of wire nuts or connectors are allowed to be used in a fire system. I
> >haven't done commercial fire in years and years but back then the
> answers to the above questions were not apparent.
>
> Gee Whiz Jim,
> I just learned one new thing and now you want to force me into cramming
> more into a already full box.  Are you nuts!!!   :-)
>
> I don't know the specific answers to your question.  Please elaborate
> with answers.  While doing so, answer the following.
>
> What type of wire ties are to be used in the installation of fire wire in
> a plenum area??  Just found out that one during my investigation on the
> stranded wire thing.
>
> Smallest gauge wire here is 18awg, no 22awg listed, but there is
> stranded stuff.
> http://www.westpenn-wpw.com/pdfs/fire-alarm-cables.pdf
>
> Have a good weekend.
>
> Les

Well, I got out of commercial fire before I found out the answer to my questions. I used the 22gage wire for keypad/remote indicator panels and AHJ either never noticed or let it pass. I don't know if they even make it anymore.

I always used plain ol wire nuts and never had an inspection problem but I don't know what the "official" answer is.

And, I'm pretty sure I still have a bundle of "plenum" tie-wraps in the back of a drawer somewhere in the van. If I remember right they were purple in color but I don't know if that was just for identification purpose or because of what they were made of.