Omer Artun on thu 23 jan 97
I have a 220V electric kiln at home which has 4 elements and on
off control on each element. It runs on 2 phase 110 V electricity.
This only allows me to run each element on 220 only. since I have 110
available it would be nice to have a switch that would let me run the
element on low (110V) or high (220V) when I want to . Does anyone know
of a supplier that would sell such a switch or at least know the name of
this type of switches. It is very useful for damp firing or keeping the
temperature constant during initial phases of firing.
The schematic (in words) is something like,
The switch is supposed to have 2 outputs (lets say O1 O2) and 3 inputs
(Say I1 I2 I3).
The inputs are connected to
I1 = Phase 1
I2 = Phase 2
I3 = Ground
The three positions should comma
1- position OFF O1 and O2 is not connected to any inputs
2- position LOW O1 is connected to I1, O2 is connected to I3
3- position HIGH O1 is connected to I1, O2 is connected to I2
Thanx
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OMER BERAT ARTUN
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Institute for Brain and tel: 401 421 2879 (home)
Neural Systems, 401 863 3920 (office)
Department of Physics 401 863 3494 (fax)
Box 1843
Brown University URL: http://www.physics.brown.edu/people/artun
Providence RI 02912 e-mail: artun@cns.brown.edu
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David Woodin Set Clayart digest on fri 24 jan 97
Skutt uses this three position switch on their Model 1027 kiln. It is part
number 104 3 heat switch @ about 21.00 each. You probably will need two
switches and ask for a schmatic of how to wire the elements to it.
Bill Aycock on sun 26 jan 97
At 06:58 AM 1/23/97 EST, you wrote:
>----------------------------Original message----------------------------
>I have a 220V electric kiln at home which has 4 elements and on
>off control on each element. It runs on 2 phase 110 V electricity.
>
>This only allows me to run each element on 220 only.
The switch you have actually uses both 110v and 220 v at differt settings,
so it is really already what you ask for.
>The inputs are connected to
>I1 = Phase 1
>I2 = Phase 2
>I3 = Ground
The voltage between I1 and I3 is 110v; the voltage between I2 and I3 is 110
volts; the voltage between I1 and I2 is 220v.
>
>The three positions should comma
>1- position OFF O1 and O2 is not connected to any inputs
>2- position LOW O1 is connected to I1, O2 is connected to I3
>3- position HIGH O1 is connected to I1, O2 is connected to I2
>
In position 1, the kiln is off.
In position 2, the elements get 110v.
In position 3 the elements get 220v
Bill- who had his total source of Voltage on Persimmon Hill
(the transformer on the pole) hit by lightning last night.
As it fried over a period of several minutes, the voltage spiked a few
times, and burned out MANY lightbulbs, but not the microwave, the satellite
reciever, or the TV sets ---???---
Bill Aycock --- Persimmon Hill --- Woodville, Alabama, USA
--- (in the N.E. corner of the State)
also-- W4BSG -- Grid EM64vr
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