[TechAssist] Re: 220v: End of Discussion
- From: "art bevilacqua" <abevilac@xxxxxxxxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Fri, 20 Dec 2002 23:44:07 -0500
Perry, you do not have 220 coming into your house. The nominal United
States Standard distribution voltage for single phase power is 120/240
Vac (120 Line to Neutral, 240 Line to Line). Look at the rating on your
breaker panel, or check your copy of the National Electrical Code to
confirm this.
If you measure the voltage with your volt meter, you will likely see
something either less than or greater than 120, the code also specifies
an allowable range that the utility must stay within.
Many other countries use 200 volt range supplies, here is a site that
lists many of them, and gives the types of connectors commonly in use.
http://kropla.com/electric2.htm
If you look back at the original question, the person having the problem
lives in the West Indies. West Indies doesn't appear in the web site
referenced, but given the popularity of 220 Vac around the world, that's
probably what he's got.=20
As far as equipment, many devices are able to handle multiple voltages.
Older equipment, stereos etc, had jumpers to reconfigure the supply
connection to the primary of the power transformer.
Newer stuff with switching supplies can vary their pulse widths to
accommodate the higher input voltages. The limit would be the ratings of
input diodes, caps, etc. but if the manufacture rated his stuff for
100-240, he'd have the world licked.
And sure enough, just for laughs, I've just looked at the five monitors
in my office (1 sceptre, 2 HP's, 1 Panasonic, and 1 NEC) and every one
of them has an input rating of 100-240 Vac, 50/60 Hz, making them
saleable throughout the world.
I hope this will solve the mystery once and for all.
Later, art
Art Bevilacqua
Essex Radio and TV
40 Main Street
Essex, MA 01929
abevilac@xxxxxxxxxxxxx
-----Original Message-----
From: techassist-bounce@xxxxxxxxxxxxx
[mailto:techassist-bounce@xxxxxxxxxxxxx] On Behalf Of Electric Medic
Sent: Friday, December 20, 2002 10:48 PM
To: techassist@xxxxxxxxxxxxx
Subject: [TechAssist] Re: 220v
Yeah, we have 220 coming to our house, one 110 on one side of breaker
box,
and another 110 on the other side. I wired a special 220v outlet to my
building outside. But in the tens of thousands of TV's that I have
fixed, I
have never had any customer that lived in the states say he used 220v on
his
TV. I don't know or care what they use overseas. I still can not figure
out
why anybody in the states would use 220v on a TV, and how they would
even
plug it in. I know the manual says this chassis will work on 220v, but
why
in the states? I am still confused about the member that says the CTC187
works fine on 110v but hums on 220v. I have not seen it answered does he
live in the states or overseas? Does he have two power cords or are they
running 220v to a standard 110 outlet. I do not think I saw this
addressed,
or I missed many post.
Perry
Electric Medic
-----Original Message-----
From: techassist-bounce@xxxxxxxxxxxxx
[mailto:techassist-bounce@xxxxxxxxxxxxx]On Behalf Of Jeff Dougherty
Sent: Friday, December 20, 2002 10:00 PM
To: techassist@xxxxxxxxxxxxx
Subject: [TechAssist] Re: 220v
Now wait...don't we all have 220 coming in to our homes now?
If you have an electric range, it requires 220...two hots and a neutral.
110vac is distributed to the rest of the wiring.
This may be a little off topic for this list, but I still believe it to
be
an
interesting topic...as well as a learning one.
In-other-words, doesn't the step-down transformer send 220 to our
panels?
support@xxxxxxxxxxxxxxxxxx
FAX 717-564-4952
Jeff Dougherty
Intrepid Video & Electronics Be careful of your thoughts.
501 Luther Rd They may become your words
Harrisburg, PA 17111 any moment.
717-909-8844
VCR tips, electronics info & general interest.
www.intrepid-video.com www.tech-repair.net
www.thetoolcaddy.com www.9-11-2001tragedy.com
***********************************************************************
----- Original Message -----
From: "Damon" <DAMON101@xxxxxxxxxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Sent: Friday, December 20, 2002 6:52 AM
Subject: [TechAssist] Re: 220v
This really doesn't make economical sense, tri-phase systems in
residential
areas??
REALITY: 2 wires provide power, the only difference is the transformer
setup
that drops down the power to your home. In the land of 110 our
transformer
outputs 220V with a center tap that delivers 2 - 110V supplies or 1 -
220V
supply. (Hey, isn't that sweet....3 supplies in one, eh?).
As for the european 220V supply system......I can only guess, but you do
not
have that Center-tap. And I really doubt that the electric company is
going
to use 2 wires for power, then strap on a 3rd wire for grounding
purposes
(what purpose would that serve, except to reference the metal toaster
casing
to your bathtub water??). I'm sure the 220V tranformers have no
practical
need for earth ground, since all the electronics would behave as though
they
had an "Isolation transformer" on them. (That's the stepdown
transformer...outside your home).
Personally, I've heard that 110V is more dangerous than 220V......but I
don't see that as a logical argument...What.....110 has less voltage,
therefore we enjoy holding onto it longer, thus toasting us, but not the
europeans????
If anybody has an answer to why 220 is safer than 110.... I'm listening.
And that TRI-PHASE residential power supply??? Man, that is a load of
hooey....of course, the government planners weren't reaching into their
pockets, so I can assume they tapped into your dad's or grandad's
wallet??
Damon Brunger
damon101@xxxxxxxxxxxxxx
Telrad Electronic Services
Ft Wayne, IN 46815
----- Original Message -----
From: "Vilhelm Boor" <villyboor@xxxxxxxxx>
To: <techassist@xxxxxxxxxxxxx>; <techassist@xxxxxxxxxxxxx>;
<techassist@xxxxxxxxxxxxx>
Sent: Friday, December 20, 2002 8:29 AM
Subject: [TechAssist] Re: 220v
>
> Villy Boor
> Boorelec Durban
> I have to come back with a post script, To get voltage for a TV at
over
200V would require you to use a transformer. I am sure there could be
other
methods using odd switching type devices but extremes of design like
that
would be nonsense as it would be cheaper to get the correct model. I can
not
see where the smoke would be derived if you stuck this on your TV as I
am at
a loss as to how you would hook it up.
> On Fri, 20 Dec 2002 07:59:10
>
> --
>
> On Fri, 20 Dec 2002 07:59:10
> Vilhelm Boor wrote:
> >
> >Villy Boor
> > Boorelec Durban
> > I am shocked that I know more about your power supplies in North
America than seemingly you its residents do. North America works on 110V
and
you are stuck with that, tough its not as safe and losses are greater.
Now
you have a situation where you wish more voltage, you have to cheat The
mains supply is 3 phase, it is usual to run a line down a street and try
to
balance the power by having house 1 on phase 1 house 2 on phase 2 etc.
To
get 220V you have to cheat, you use 2 phases so a plug has 2 live's. But
why
in the name of Freddy would we have to do that. Options on the back of
TVs
have gone, that requires you have a mains transformer, costs money is a
no
no. American TV is only viewable in America and a few other countries,
the
rest of us use the PAL system a much later and superior system, it
follows
then there is no requirement for your sets to work here or X. No we have
standard 3 pin plugs (flat Pins pointing at 10 and 2 with an unused
earth at
6) nominal fuse volt
> a
>
> > ge
> > is 4A and there is no mystery
> >--
> >
> >On Thu, 19 Dec 2002 21:54:26
> > Julian Panizo wrote:
> >>
> >>In the countries with 220-240 V many sets have the 110 V option via
switch
> >>and a few have the voltage change automatic. The household wiring is
two
(2)
> >>conductors, normally one hot and the other neutral, derived from a
street
> >>trifasic supply. In a few countries you get in some places 220 and
others
> >>110.
> >>Julian
> >>
> >>Julian Panizo
> >>C.C. 1867 Asunci=F3n Paraguay
> >>Phone/Fax 595 21 601913
> >>panizo@xxxxxxxxxxxxxxx
> >>----- Original Message -----
> >>From: "Electric Medic" <info@xxxxxxxxxxxxxxxxx>
> >>To: <techassist@xxxxxxxxxxxxx>
> >>Sent: Thursday, December 19, 2002 8:41 PM
> >>Subject: [TechAssist] Re: 220v
> >>
> >>
> >>>
> >>> We STILL have not answered the QUESTION. Does this guys set work
on
> >>> 220volts. He said the set worked on 110v but not properly on 220v.
I
can
> >>not
> >>> believe that the set was designed to work on 220v using the same
power
> >>cord
> >>> that came with the set. Every 220v circuit I have seen here in the
states
> >>> has a different cord (larger plug) with two hots. Is this some
special
> >>> CTC187AD. I think this is important enough to answer. We all know
that
220
> >>> has to hots and a neutral, and 110 has one hot and a neutral. I am
> >>> interested how in the world he is plugging a CTC187 into a 220v
outlet.
> >>> Please someone, or the owner of the set EXPLAIN. Everyone that I
have
seen
> >>> will smoke if you apply 220v. This is driving me crazy. Why would
anyone
> >>> want to run his set on both 110v and 220v anyway? It seems to me
if it
> >>> worked on 110v, that should be good enough. Very confused here in
Georgia.
> >>>
> >>> Perry Bower
> >>> Electric Medic
> >>> "It's Cheaper to Keep Her"
> >>> http://www.electricmedic.com
> >>> Check out the Electronic Repair Screensaver We created. More
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> >>> Martinez, Georgia 30907
> >>> Phone: 706-8MEDIC4 (863-3424)
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> >>>
> >>> -----Original Message-----
> >>> From: techassist-bounce@xxxxxxxxxxxxx
> >>> [mailto:techassist-bounce@xxxxxxxxxxxxx]On Behalf Of Larry E.
> >>> Sent: Thursday, December 19, 2002 2:11 PM
> >>> To: techassist@xxxxxxxxxxxxx
> >>> Subject: [TechAssist] Re: 220v
> >>>
> >>>
> >>>
> >>> Tommy, their talking about European tv sets not North American
> >>> Larry Eastman
> >>> American TV & Electronics
> >>> Crystal River, Fl. 34428
> >>>
> >>> Hermantvr@xxxxxxxxxxxxx wrote:
> >>>
> >>> > Guys...I really don't know what you mean when you talk abut a TV
using
> >>> 220v.
> >>> > On a 120v line you have a hot side and a neutral (0 volts) side.
On
a
> >>240
> >>> > line you have two hot sides.....believe me it will let the smoke
out
of
> >>> yur
> >>> > power supply filters.
> >>> >
> >>> > Tommy Herman
> >>> > Herman TV
> >>> > 250 School Ave SW
> >>> > Taylorsville N.C. 28681
> >>> > 828-632-5322 Voice
> >>> > 828-632-3880 Fax
> >>> >
> >>> > If a TV requires 120 Watts of power, you could power it with
120V, 1
Amp
> >>> > or 240V, 0.5A.
> >>> >
> >>> >
> >>> > Gary McCartney
> >>> >
> >>> > McCartney Electronics
> >>> > 7134 Fife Rd, RR 7
> >>> > Guelph Ontario Canada N1H 6J4
> >>> > Fax: (519)821-1530
> >>> > email: gary (at) number63.ca
> >>> >
> >>> >
> >>> >
> >>> >
> >>> > gulftech@xxxxxxxx wrote:
> >>> >
> >>> >>Dear Villy,
> >>> >>
> >>> >>Most of us know that formula as P =3D IE. Since current is
directly
> >>> >>proportional to voltage ( I =3D E/R), an increase in voltage
yields a
> >>> >>corresponding increase in current with R held constant. If
current
and
> >>> >>voltage are both doubled, power is increased by a factor of 4.
> >>> >>
> >>> >>If I'm wrong, please set me straight.
> >>> >>
> >>> >>Regards,
> >>> >>
> >>> >>Ken Smith
> >>> >>Gulf Technical Services
> >>> >>3034 Gulf Breeze Parkway
> >>> >>Gulf Breeze, FL 32563
> >>> >>850-934-8324 (Voice) 850-932-0819 (Fax)
> >>> >>
> >>> >>On Thu, 19 Dec 2002 11:03:37 0000 "Vilhelm Boor"
<villyboor@xxxxxxxxx>
> >>> >>writes:
> >>> >>
> >>> >>>Villy boor
> >>> >>> Boorelec Durban
> >>> >>> When I read some of this I am rather surprised, where were
some of
> >>> >>>you trained, what happened to Ohms law? Why 2 round prongs.
Most
> >>> >>>countries use various combinations of flat pin at various
angles,
> >>> >>>Round pins tended to have a bakelite body.
> >>> >>> But please remember W=3DIV so the greater V is the less I =
will
be
so
> >>> >>>cables are lighter, plugs can be smaller and fuses lower I.
Philips
> >>> >>>for example make a wide range of TV with an input requirement
of
> >>> >>>from 90V to 270V, just plug it in and its working. I am
sometimes
> >>> >>>left speechless, this is your subject and livlihood, you must
know
> >>> >>>basics.
> >>> >>>On Wed, 18 Dec 2002 19:43:29
> >>> >>> teltek2 wrote:
> >>> >>>
> >>> >>>>No...Their 220 does not requite a huge plug like your
dryer..just
2
> >>> >>>>
> >>> >>>round
> >>> >>>
> >>> >
> >>> > Tommy Herman
> >>> > Herman TV
> >>> > 250 School Ave SW
> >>> > Taylorsville N.C. 28681
> >>> > 828-632-5322 Voice
> >>> > 828-632-3880 Fax
> >>> > hermantvr@xxxxxxxxxxxxx
> >>> > ------------------------------------------
> >>> > Submit A Repair Tip For Everyone Here:
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> >>> >
> >>> >
> >>>
> >>>
> >>> --
> >>> Larry Eastman
> >>> American TV & Electronics
> >>> Crystal River, Fl.
> >>> http://www.tvjunkyard.com
> >>>
> >>> ------------------------------------------
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