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Topic Title: 1 Phase -v- 3 Phase
Topic Summary:
Created On: 14 January 2017 11:25 AM
Status: Read Only
Linear : Threading : Single : Branch
 1 Phase -v- 3 Phase   - Sandtree - 14 January 2017 11:41 AM  
 1 Phase -v- 3 Phase   - Sandtree - 16 January 2017 02:36 PM  
 1 Phase -v- 3 Phase   - OMS - 16 January 2017 02:53 PM  
 1 Phase -v- 3 Phase   - deejackson - 16 January 2017 03:04 PM  
 1 Phase -v- 3 Phase   - AJJewsbury - 16 January 2017 03:16 PM  
 1 Phase -v- 3 Phase   - Sandtree - 18 January 2017 09:25 AM  
 1 Phase -v- 3 Phase   - mapj1 - 18 January 2017 11:00 AM  
 1 Phase -v- 3 Phase   - Sandtree - 02 February 2017 09:59 AM  
 1 Phase -v- 3 Phase   - mapj1 - 02 February 2017 03:49 PM  
 1 Phase -v- 3 Phase   - Delbot321 - 02 February 2017 03:58 PM  
 1 Phase -v- 3 Phase   - Sandtree - 02 February 2017 04:04 PM  
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 14 January 2017 11:41 AM
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Sandtree

Posts: 6
Joined: 14 January 2017

Don't seem to be able to ask Q in the Wiring forum yet so will ask it here.

The studio is a sub unit of a former factory, the landlord stated that there is a 3 phase power supply to the building but all electrical work must be done by their preferred electrician. We need to install a kiln into the studio which can be done off of a 1 phase 220v or 3 phase 400v supply but is also expandable by adding an additional element to it that increases the output by 3kW.

I finally manage to get hold of the contractor, simply by bumping into them when they were on site, and they advised the board could support up to a 40 amp supply and does have 3 phase but for reasons not specified he said that 1 phase was a better idea. The retailer of the kiln however said that if you can do 3 phase it's much better for the life of the kiln.

On 1 phase the unexpanded kiln is 26 amp and comes with a 32 amp cee form plug. From what I make out when expanded this goes up to 31amp. On 3 phase its initially 13 amp with a 16amp plug and 15 amp if expanded. The expansion doesnt involve changing the wiring of the kiln itself so I am guessing these numbers must be right as the expanded form still fits within the capacity of the plug on the unexpanded form.

So to the Qs.....

1) Is there really that much benefit of a 3 phase supply?
2) Am I correct in thinking that the new socket can be put in and wired & fused/breakered for the 32amp (1phase) or 16amp (3phase) and then used correctly/safely wether the kiln is expanded or not? ie when using a lower current it shouldnt have a lower rated breaker or such

Many thanks

Edited: 16 January 2017 at 02:36 PM by Sandtree
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