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a question about electric kilns - amps and volts - it worked !

updated fri 1 jul 11


John Post on wed 29 jun 11

Thanks to Guillermo and all the others who gave me advice about
running a 220 and 110 volt kiln through the same electronic kiln

It turns out what Guillermo proposed worked perfectly. I took the
NEMA 1430P plug from the Paragon and tested it with the Evenheat. I
just used one leg of the 220 and the little 110 volt kiln works
perfectly when plugged into my wall controller.

My local appliance store ordered a new 1430P plug for me. So for $14
bucks I can run both kilns through the same controller. Much cheaper
than running a new circuit and a whole lot less sweaty than climbing
around in my studio attic to run the line over.

It's great to have a collective brain to pick when you have a problem.

John Post
Sterling Heights, Michigan

On Jun 28, 2011, at 5:22 PM, Barro Cocido wrote:

> According to Evenheat, your mod.810 uses NEMA 5-20R: a "hot" wire, a
> neutral
> and ground. a NEMA 14-30P has 2 "hot" wires, a neutral and ground.
> Having that in mind and myself being a daring guy, this is what I'd
> do,
> assuming the controller is in between the wall outlet and the kiln:
> I'd
> purchase a 14-30P plug and connect:
> 5-20 Ground wire to 14-30 Ground
> 5-20 Neutral wire to 14-30 Neutral
> 5-20 "HOT" wire to 14-30 "HOT" (either one of the 2)
> ** You will have no wire connected to one of the "HOTs" of the 14-30
> **
> That should provide 120v to your Evenheat.
> You would need to ask your controller's manufacturer or perhaps it
> is in its
> user manual, if controlling a 120V kiln is supported. Myself, don't
> see why
> not. An electronic temperature controller is just a switch that is
> active
> or not letting or not voltage get to the kiln elements, based on the
> variation of temperature input to an electronic circuit (PID). But
> manufacturers could possible prevent the controller from supplying
> power if
> only 1 of the "HOT" wire is drawing current.
> Note: You have to make sure that your controller's 14-30P neutral is
> actually present. Measure voltage between a HOT an neutral and you
> should
> get 120V, otherwise the above would not work, your Evenheat needs that
> neutral and one HOT to get 120V.
> The above is what I'd do, I am not suggesting you should try it !!
> Guillermo