| All,
I have an electrician coming on Wednesday to correct a faulty circuit in my 
home office and install individual 110 and 220 v. circuits for my radios. I 
will have him look at the lines for the smoke detectors. If the a.c. wiring 
quality is any indication, I expect that they did a similarly poor job 
installing the smoke detectors.
Thank you everyone for your advice.
Stan, K4SBZ
"Real radio bounces off the sky."
> On Jul 28, 2018, at 7:32 PM, Steve Bell <eagle572@comcast.net> wrote:
> 
> During any installation of wired thermostats, smoke detectors, etc.  I highly
> recommend not just twisted pair control lines, but make sure that the
> lines are twisted pair with shield.
> 
> If the installers cannot supply such shielded cable, you can get it from your 
> local electronics supply
> house.
> 
> The shield connection itself must also not be left disconnected.
> 
> Steve Bell KJ7OG
> 
> 
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