Wiring for electric kiln


J

jgharston

One of my tenants is a potter, he's currently got a 3kW electric
kiln and is planning on getting a 6kW one, so I need to put an
extra circuit in for it. Any points to bear in mind?
I'm planning on treating it as though it's a cooker and putting
in a 30/32A radial with a neon two-pole switch and cooker
outlet box. To tidy things up I'll probably also put in a 15/16A
radial for the 3kW kiln as well.

JGH
 
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A

ARWadsworth

jgharston said:
One of my tenants is a potter, he's currently got a 3kW electric
kiln and is planning on getting a 6kW one, so I need to put an
extra circuit in for it. Any points to bear in mind?
I'm planning on treating it as though it's a cooker and putting
in a 30/32A radial with a neon two-pole switch and cooker
outlet box. To tidy things up I'll probably also put in a 15/16A
radial for the 3kW kiln as well.
I think you have got it covered.

Just make sure that the cable will be suitable for a higher powered kiln, eg
a 9kW 40A supply for future upgrades.

Cheers
 
J

jgharston

ARWadsworth said:
Just make sure that the cable will be suitable for a higher powered kiln, eg
a 9kW 40A supply for future upgrades.
Good point, I've got a pile of 6mm that's been sitting doing nothing.

JGH
 
A

Andy Dingley

One of my tenants is a potter, he's currently got a 3kW electric
kiln and is planning on getting a 6kW one, so I need to put an
extra circuit in for it. Any points to bear in mind?
Leakage currents can get fairly high for pottery kilns. Glass kilns
are easier, as big ones of that power are now using tube elements that
don't have the same leakage.
 
H

harry

One of my tenants is a potter, he's currently got a 3kW electric
kiln and is planning on getting a 6kW one, so I need to put an
extra circuit in for it. Any points to bear in mind?
I'm planning on treating it as though it's a cooker and putting
in a 30/32A radial with a neon two-pole switch and cooker
outlet box. To tidy things up I'll probably also put in a 15/16A
radial for the 3kW kiln as well.

JGH
When you get to 6Kw you need to asses the other electric heating loads
in the property. Eg immersion heater, kettle, cookers. You may find
yourself in an overload situation.
http://en.wikipedia.org/wiki/Diversity_factor
 
J

jgharston

harry said:
When you get to 6Kw you need to asses the other electric heating loads
in the property. Eg immersion heater, kettle, cookers. You may find
yourself in an overload situation.http://en.wikipedia.org/wiki/Diversity_factor
It's a pottery workshop, the total electrical load will be the
6kW kiln, the existing 3kW kiln, 10 x 35W fluoescent lights,
and a radio. Heating and hot water is gas-fired, controlled
by a circuit on the landlord's supply.

JGH
 
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O

Owain

One of my tenants is a potter, he's currently got a 3kW electric
kiln and is planning on getting a 6kW one, so I need to put an
extra circuit in for it. Any points to bear in mind?
Cable and accessory rating for ambient temperature.

Owain
 

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