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Posted by Bill on November 19, 2008, 9:21 pm
Wired doorbells have a transformer which is always on and always using
electricity. This is yet one more thing in the house which does this like
TV, microwave, remote control things, things with clocks, plug-in phones,
etc.
These things add up...
I replaced/rewired my switch so the transformer is only on when the doorbell
button is pressed! Thus the transformer is off most of the time now.
I installed a regular electrical box at my front door, ran 14 ga. romex from
this box to the doorbell transformer, then got a nice brass blank wall
plate, drilled a hole in this plate, then installed a 120V momentary push
switch in the plate. Then wired this to switch on the transformer when the
button is pressed. Then connected the two wires which were going to the old
button so the doorbell would ring as soon as it receives power from the
transformer.
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Posted by Red Green on November 19, 2008, 9:39 pm
> Wired doorbells have a transformer which is always on and always using
> electricity. This is yet one more thing in the house which does this
> like TV, microwave, remote control things, things with clocks, plug-in
> phones, etc.
>
> These things add up...
>
> I replaced/rewired my switch so the transformer is only on when the
> doorbell button is pressed! Thus the transformer is off most of the
> time now.
>
> I installed a regular electrical box at my front door, ran 14 ga.
> romex from this box to the doorbell transformer, then got a nice brass
> blank wall plate, drilled a hole in this plate, then installed a 120V
> momentary push switch in the plate. Then wired this to switch on the
> transformer when the button is pressed. Then connected the two wires
> which were going to the old button so the doorbell would ring as soon
> as it receives power from the transformer.
>
>
>
It's probably stamped right on it but I never looked. Any idea how many
watts it's uses in it's standby state?
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Posted by Stormin Mormon on November 19, 2008, 10:45 pm
With the cost of the parts, romex, etc. The break even date is probably some
where in the year 2029. You know, third year of the Gonzalez administration.
He took over from the Castro administration.
--
Christopher A. Young
Learn more about Jesus
www.lds.org
.
It's probably stamped right on it but I never looked. Any idea how many
watts it's uses in it's standby state?
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Posted by Boden on November 20, 2008, 11:37 am
Red Green wrote:
>
>
>>Wired doorbells have a transformer which is always on and always using
>>electricity. This is yet one more thing in the house which does this
>>like TV, microwave, remote control things, things with clocks, plug-in
>>phones, etc.
>>These things add up...
>>I replaced/rewired my switch so the transformer is only on when the
>>doorbell button is pressed! Thus the transformer is off most of the
>>time now.
>>I installed a regular electrical box at my front door, ran 14 ga.
>>romex from this box to the doorbell transformer, then got a nice brass
>>blank wall plate, drilled a hole in this plate, then installed a 120V
>>momentary push switch in the plate. Then wired this to switch on the
>>transformer when the button is pressed. Then connected the two wires
>>which were going to the old button so the doorbell would ring as soon
>>as it receives power from the transformer.
>
>
> It's probably stamped right on it but I never looked. Any idea how many
> watts it's uses in it's standby state?
This whole thread is about chasing the "little yellow hole in the snow."
It's trivial.
When the bell is not ringing, the current that is measured is largely
reactive or imaginary current. It is the current determined by the
transformer's magnetizing inductance. The only dissipation is some
small core heating and trivial wire losses. The true dissipation is far
less than what most are calculating by multiplying measured volts and
measured current.
Worry about something important...like preserving the US Constitution.
Boden
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Posted by Red Green on November 20, 2008, 6:54 pm
> Red Green wrote:
>>
>>
>>>Wired doorbells have a transformer which is always on and always
>>>using electricity. This is yet one more thing in the house which does
>>>this like TV, microwave, remote control things, things with clocks,
>>>plug-in phones, etc.
>>>These things add up...
>>>I replaced/rewired my switch so the transformer is only on when the
>>>doorbell button is pressed! Thus the transformer is off most of the
>>>time now.
>>>I installed a regular electrical box at my front door, ran 14 ga.
>>>romex from this box to the doorbell transformer, then got a nice
>>>brass blank wall plate, drilled a hole in this plate, then installed
>>>a 120V momentary push switch in the plate. Then wired this to switch
>>>on the transformer when the button is pressed. Then connected the two
>>>wires which were going to the old button so the doorbell would ring
>>>as soon as it receives power from the transformer.
>>
>>
>> It's probably stamped right on it but I never looked. Any idea how
>> many watts it's uses in it's standby state?
>
> This whole thread is about chasing the "little yellow hole in the
> snow."
> It's trivial.
>
> When the bell is not ringing, the current that is measured is largely
> reactive or imaginary current. It is the current determined by the
> transformer's magnetizing inductance. The only dissipation is some
> small core heating and trivial wire losses. The true dissipation is
> far less than what most are calculating by multiplying measured volts
> and measured current.
>
> Worry about something important...like preserving the US Constitution.
>
> Boden
>
>
Yellow holes in snow are not trivial.
Watch out where the huskies go and dont you eat that yellow snow. [Frank
Zappa]
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> electricity. This is yet one more thing in the house which does this
> like TV, microwave, remote control things, things with clocks, plug-in
> phones, etc.
>
> These things add up...
>
> I replaced/rewired my switch so the transformer is only on when the
> doorbell button is pressed! Thus the transformer is off most of the
> time now.
>
> I installed a regular electrical box at my front door, ran 14 ga.
> romex from this box to the doorbell transformer, then got a nice brass
> blank wall plate, drilled a hole in this plate, then installed a 120V
> momentary push switch in the plate. Then wired this to switch on the
> transformer when the button is pressed. Then connected the two wires
> which were going to the old button so the doorbell would ring as soon
> as it receives power from the transformer.
>
>
>