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Three phase for a resistance load??

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Three phase for a resistance load?? Vic Dura 09-20-2006
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Posted by on September 20, 2006, 12:35 pm
you might have trouble getting the amprage out of a single phase
circuit in a normal instalation.

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Vic Dura wrote:
> Hello,
>
> The engineers in sci.engr.electrical.sys-protection were useless on
> this question, so I thought I would ask it here where the *real*
> knowledge is.
>
> The question is regarding the use of 3-phase power. I noticed an
> electric pottery kiln the other day that used 3-phase power. It was
> about a 6 or 7 kw model. As I understand it, electric kilns are
> resistance loads, just like a toaster oven.
>
> I had always thought that 3-phase power was an advantage only for
> induction loads, and had no advantage over single-phase for resistance
> loads. Is that correct? If so, what would the advantage be for a
> 3-phase kiln such as those shown at
>
> http://www.skutt.com/products/elec_req.htm ?
>
> Thanks for any enlightenment.
> --
> To email me directly, remove CLUTTER.


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Posted by Chris Lewis on September 20, 2006, 1:02 pm
> you might have trouble getting the amprage out of a single phase
> circuit in a normal instalation.

Not at all. Dryer circuits are 30A/240V circuits (7200W).
Stove circuits are up to 12Kw. My garage is 24Kw ;-)
--
Chris Lewis, Una confibula non set est
It's not just anyone who gets a Starship Cruiser class named after them.

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