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Re: Rheostats
Mike,
Not a good idea - your rheostats will go up in a cloud of smoke! You need
low ohm resistors that can dissapate kilowatts. You can calculate the
power your rheostats can handle as I x I x R. If you draw 15 KVA from 240
VAC, your current will be on the order of 62 amps. Better to use several
electric stove elements in parallel, preferably in combination with an arc
welder. See the many postings in the archives about pig ballasting. But
your rheostats could be a good RQ/TCBOR fan speed controller.
--Steve
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> From: Tesla List <tesla-at-pupman-dot-com>
> To: tesla-at-pupman-dot-com
> Subject: Rheostats
> Date: Sunday, January 03, 1999 12:39 PM
>
> Original Poster: Michael Tucknott <Michael.Tucknott-at-virgin-dot-net>
>
> Hi all
> I have just picked up a number of rheostats for next to no money and I
> was wondering
> if any of these or combinations of them may be usued to limit the
> current in to the
> pole pig Dr B and myself have just got our hands on(15 KVA)
>
> The Rheostats have the following values:-
>
> Amps Ohms Qty
> 2.8 160 1
> 10 4.5 1
> 3 24 1
> 4 8.5 2
> 5 6.5 1
> 3.3 14 2
> 3.3 28.5 3
> 5 15 1
>
> Any thoughts or comments on this little lot will be very helpful.
>
> Cheers Mike Tucknott
>
>
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> "He tames the thundering bolt of jove and annihilates time and space"
> Nikola Tesla 1906
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