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Science Forum Index » Electronics - Basics Forum » Why is a phone circuit plugged into 115 Volts
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| searoom |
 Posted: Sat Feb 03, 2007 4:49 pm |
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I just bought a house in Vallejo, California and found a telephone
wire in one room leading to a plug that is plugged into a 115 Volt
outlet... Anyone know why?
Thanks. |
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| Jamie |
| Posted: Sat Feb 03, 2007 5:05 pm |
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searoom wrote:
Quote: I just bought a house in Vallejo, California and found a telephone
wire in one room leading to a plug that is plugged into a 115 Volt
outlet... Anyone know why?
Thanks.
to run an old princes phone which had a light on it?
--
"I'm never wrong, once i thought i was, but was mistaken"
Real Programmers Do things like this.
http://webpages.charter.net/jamie_5 |
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| Charles Schuler |
| Posted: Sat Feb 03, 2007 5:54 pm |
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"searoom" <searoom1@yahoo.com> wrote in message
news:1170535782.566457.141970@j27g2000cwj.googlegroups.com...
Quote: I just bought a house in Vallejo, California and found a telephone
wire in one room leading to a plug that is plugged into a 115 Volt
outlet... Anyone know why?
A "plug" or a "wall-wart?" |
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| chuck |
| Posted: Sat Feb 03, 2007 7:10 pm |
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Charles Schuler wrote:
Quote: "searoom" <searoom1@yahoo.com> wrote in message
news:1170535782.566457.141970@j27g2000cwj.googlegroups.com...
I just bought a house in Vallejo, California and found a telephone
wire in one room leading to a plug that is plugged into a 115 Volt
outlet... Anyone know why?
A "plug" or a "wall-wart?"
Or is it an intercom system over the power line?
----== Posted via Newsfeeds.Com - Unlimited-Unrestricted-Secure Usenet News==----
http://www.newsfeeds.com The #1 Newsgroup Service in the World! 120,000+ Newsgroups
----= East and West-Coast Server Farms - Total Privacy via Encryption =---- |
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| Chris |
| Posted: Sat Feb 03, 2007 7:20 pm |
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On Feb 3, 2:49 pm, "searoom" <searo...@yahoo.com> wrote:
Quote: I just bought a house in Vallejo, California and found a telephone
wire in one room leading to a plug that is plugged into a 115 Volt
outlet... Anyone know why?
Thanks.
Hi, Sea. Firsts there was a phone that required power while it was on
hook (caller ID, for instance). Phone company rules specify that
phones can't use more than milliwatts from the phone line when they're
on hook. So the extra phone features are powered off line voltage
(usually with a wall wart in there somewhere).
If you've got a multimeter, though, it wouldn't hurt to unscrew the
phone service wall plate and measure the voltage. Or have a friend do
it. With all phones on hook, you should see a nominal 48VDC (usually
between 40 and 60VDC) with no AC between the green and red wires. If
you're measuring line voltage AC between these wires, you should have
your wiring checked immediately. The prior owner may have squirreled
a little gadget back there it might be good to know about, too.
It also might be best to ask your phone company for a safety
inspection before they hook up. This service is always free, AFAIK.
It doesn't hurt to be cautious, especially if the prior owner was
particularly frisky with electricity. Owning a house isn't a
guarantee of intelligence, and I've heard of amazing things done by
prior owners in some older homes.
Good luck
Chris |
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| Tom Biasi |
| Posted: Sat Feb 03, 2007 8:19 pm |
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"searoom" <searoom1@yahoo.com> wrote in message
news:1170535782.566457.141970@j27g2000cwj.googlegroups.com...
Quote: I just bought a house in Vallejo, California and found a telephone
wire in one room leading to a plug that is plugged into a 115 Volt
outlet... Anyone know why?
Thanks.
The telephone wire leads to the 115 volt outlet but then what?
Where does it come from?
Some really dumb owner may have used telephone wire as AC extension cord.
Tom |
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| Ryan Weihl |
| Posted: Sun Feb 04, 2007 6:37 am |
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Tom Biasi wrote:
Quote:
"searoom" <searoom1@yahoo.com> wrote in message
news:1170535782.566457.141970@j27g2000cwj.googlegroups.com...
I just bought a house in Vallejo, California and found a telephone
wire in one room leading to a plug that is plugged into a 115 Volt
outlet... Anyone know why?
Thanks.
The telephone wire leads to the 115 volt outlet but then what?
Where does it come from?
Some really dumb owner may have used telephone wire as AC extension
cord.
Tom
better have a look at all the wiring in the house to
make sure you didn't buy a firetrap
-- |
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| Rick |
| Posted: Sun Feb 04, 2007 1:07 pm |
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"Jamie" <jamie_ka1lpa_not_valid_after_ka1lpa_@charter.net> wrote in message
news:CJ6xh.632$CW1.355@newsfe03.lga...
Quote: searoom wrote:
I just bought a house in Vallejo, California and found a telephone
wire in one room leading to a plug that is plugged into a 115 Volt
outlet... Anyone know why?
Thanks.
to run an old princes phone which had a light on it?
I'd say you are correct.... |
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| Rick |
| Posted: Sun Feb 04, 2007 1:21 pm |
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"Rick" <notta@goodone.com> wrote in message
news:ypoxh.20620$w91.5163@newsread1.news.pas.earthlink.net...
Quote:
"Jamie" <jamie_ka1lpa_not_valid_after_ka1lpa_@charter.net> wrote in message
news:CJ6xh.632$CW1.355@newsfe03.lga...
searoom wrote:
I just bought a house in Vallejo, California and found a telephone
wire in one room leading to a plug that is plugged into a 115 Volt
outlet... Anyone know why?
Thanks.
to run an old princes phone which had a light on it?
I'd say you are correct....
The "plug" being a small transformer with screw terminals that was used for the purpose
you state. |
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| Grostle News |
| Posted: Tue Feb 06, 2007 12:32 pm |
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I bought a surge protector that plugged into wall voltage and it has
three ports for telephone lines. The manual says that by running the
phone line from the wall to the surge protector which is connected to a
120vac wall outlet and then by plugging phone, fax, modem lines into the
same surge protector the equipment will be protected.
This may be something similar to what you have but I have to admit I
don't know enough about this to offer a qualified, complete explanation.
On a different subject, I have also read that active 120vac wiring can
carry telephone signals from one outlet to another using available
equipment. But I don't understand this technology.
Belkin Home Series F9H120-CW Surge Protector
saxum g.n. |
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| Rich Grise |
| Posted: Tue Feb 06, 2007 6:54 pm |
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On Sat, 03 Feb 2007 12:49:42 -0800, searoom wrote:
Quote: I just bought a house in Vallejo, California and found a telephone
wire in one room leading to a plug that is plugged into a 115 Volt
outlet... Anyone know why?
Thanks.
You should ask the guy who sold you the house.
Good Luck!
Rich |
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