ECN Electrical Forum - Discussion Forums for Electricians, Inspectors and Related Professionals
ECN Shout Chat
Shout Box
Recent Posts
Air Compressor feeder conductor sizing
by Potseal. 01/15/18 09:08 PM
VDE 0100 to introduce AFCIs
by LongRunner. 01/15/18 11:38 AM
Under carpet cable?
by HotLine1. 01/15/18 09:57 AM
Any New Years Resolutions?
by Bill Addiss. 01/13/18 10:21 AM
New in the Gallery:
Housebilding DIY wiring
SE cable question
Who's Online Now
0 registered members (), 21 guests, and 7 spiders.
Key: Admin, Global Mod, Mod
Previous Thread
Next Thread
Print Thread
Rate Thread
Intercoms, Anyone? #25630
05/15/03 09:25 AM
05/15/03 09:25 AM
T
ThinkGood  Offline OP
Member
Joined: Aug 2002
Posts: 1,081
Milwaukee, WI
Hi.

With regard to residential systems:

What experiences (good, not good) have you had with the various intercom systems out there? For example, premature failure (power surges?), repeated service calls, lack of expandability (or is that poor planning?), etc.

With which brands have you worked (e. g. Aiphone, NuTone, etc.)?

Thanks!

Work Gear for Electricians and the Trades
Re: Intercoms, Anyone? #25631
05/15/03 10:09 AM
05/15/03 10:09 AM
J
JCooper  Offline
Member
Joined: Dec 2002
Posts: 228
Kendall Park, NJ USA
I have done a lot of work with Aiphone with good results. Their video intercoms are one of the best out there, they only require two wires between master and door station units. I have also installed the multi master systems with several door stations. They are very easy to install and I have not really had any problems with them. Just keep ground faults off the communications wire. The only other ones I have used are Siedle, and stay away, far far away from them. The video units require somewhere around 20 conductors between master and door station and to top it off the instructions are only in German.

Jim

Re: Intercoms, Anyone? #25632
10/10/03 11:09 PM
10/10/03 11:09 PM
Trumpy  Offline

Member
Joined: Jul 2002
Posts: 8,231
SI,New Zealand
ThinkGood,
I've installed the odd Aiphone unit myself and I've never had any problems with them.
the biggest problems with intercom systems are normally due to incorrect wiring or having the wrong voltage applied to them (where this is derived from an external source).
Another thing that I have learnt over the years, is to keep Intercom wires well away from any Mains voltage cables, not only for reasons of safety, but those of mutual induction, causing a hum to be transferred into the intercom system. [Linked Image]

Re: Intercoms, Anyone? #25633
10/11/03 04:52 PM
10/11/03 04:52 PM
P
pauluk  Offline
Member
Joined: Aug 2001
Posts: 7,520
Norfolk, England
I don't seem to get requests for intercoms very often.

Wireless models appeal to some people due to the lack of interconnecting wires, and I've had queries about these when they don't work at their best due to noisy power lines or other interference.

One such problem was someone who had bought some to communicate from his shop to the living quarters above and could get only a very poor and noisy signal. It turned out the outlet in the shop was on a different phase to the apartment, and I ended up installing a special outlet at the check-out just for the intercom.

Re: Intercoms, Anyone? #25634
10/13/03 12:09 AM
10/13/03 12:09 AM
Trumpy  Offline

Member
Joined: Jul 2002
Posts: 8,231
SI,New Zealand
Ah yes Paul, the old Wireless Intercom on two different Phases problem!.
I got sworn at, a few years ago when a customer bought a w/less Intercom from the retail shop of where I work and I was told that my company sold nothing but cheap junk
(at NZ$199?!).
I went and had a look and that's what it was, one socket-outlet on the Red Phase and the other on the Blue Phase!.
Never did get an apology, but what the heck, the customer is always right, eh!. [Linked Image]

Re: Intercoms, Anyone? #25635
10/14/03 03:48 PM
10/14/03 03:48 PM
P
pauluk  Offline
Member
Joined: Aug 2001
Posts: 7,520
Norfolk, England
It's surprising just how many people don't realize that they can be overheard by others when using a wireless intercom.

A couple of times I've heard the same reaction as from certain cordless phone users, who seem to think that "they" (the authorities) should do something to stop people listening in.


Featured:

2017 Master Electrician Exam Preparation Combos
2017 NEC Electrician
Exam Prep Combos:
Master / Journeyman

 

Member Spotlight
Scott35
Scott35
Anaheim, CA. USA
Posts: 2,708
Joined: October 2000
Show All Member Profiles 
Top Posters(30 Days)
sparky 21
Admin 19
Potseal 13
Popular Topics(Views)
243,514 Are you busy
180,311 Re: Forum
170,804 Need opinion
Powered by UBB.threads™ PHP Forum Software 7.6.1
(Release build 20180101)
Page Time: 0.014s Queries: 14 (0.002s) Memory: 0.9758 MB (Peak: 1.1190 MB) Zlib enabled. Server Time: 2018-01-16 23:31:50 UTC