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kiln/electric service

updated wed 13 aug 03

 

Earl Krueger on mon 11 aug 03


Paula,

It depends...
1. On how much electricity everything else on the service is using;
wheel, heater/AC, lights, stereo, TV, refrigerator, freezer, dryer,
etc
Many of these and you would soon run out of capacity and risk being
in the dark.
2. If you want to be legal, or not.
Electrical codes vary across the country (around the world) and use
formulas and rules to determine how many circuits of what capacity
can be connected to a specific amperage service. An old code book
that I have (1981) says '(heavy) loads which are expected to be on
continuously for three hours or more (can) not exceed 80% of the
branch circuit rating. Using 0.8x = 65 amps, x = 65/0.8 = 81.25.
Therefore you would need a circuit of at least 82 amp capacity for
your kiln which means that your 100 amp service could not support
even one additional 20 amp circuit for your wheel.


So let's say you go ahead with the 65 amp kiln on your 100 amp service
and put 20 hours into making a wonderful incised pot that will
look great with that gorgeous but finicky ^6 pearlescent candy apple
green glaze. Then you discover that your circuit breaker keeps
tripping as soon as the kiln hits ^3. What a bummer!!!

Earl


On Monday, August 11, 2003, at 07:22 PM, Allan J. Walsh wrote:

> I am interested in buying a new kiln and it is rated at 65 amps. My
> electric service is 100 amps. The salesperson said we should have 200
> amps service to run a 65 amp kiln. Is it at all possible to run this
> kiln (65 amps) on 100 amps service?
>
> Paula Walsh

Allan J. Walsh on mon 11 aug 03


Hello Everyone;

I have a question about electric service and Amperage for kilns. I am =
interested in buying a new kiln and it is rated at 65 amps. My electric =
service is 100 amps. The salesperson said we should have 200 amps =
service to run a 65 amp kiln. Is it at all possible to run this kiln (65 =
amps) on 100 amps service?

Paula Walsh