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Topic Title: 3 phase supply at a domestic premises
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Created On: 31 October 2013 03:25 PM
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 31 October 2013 03:25 PM
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jtony

Posts: 2
Joined: 31 October 2013

I was asked by a surveyor friend if this is an issue. I couldn't think of one, other than the C.U ought to have a 400v warning notice on it.

Any definite knowledge on this?

Cheers.
 31 October 2013 03:40 PM
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AJJewsbury

Posts: 11272
Joined: 13 August 2003

No problem with 230/400V - even the requirement for voltage notice was dropped quite while ago (now only required when the voltage to earth is over 230V - not between lines).
- Andy.
 01 November 2013 03:22 PM
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jtony

Posts: 2
Joined: 31 October 2013

Cheers Andy.
 01 November 2013 05:17 PM
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mikejumper

Posts: 1701
Joined: 14 December 2006

It seems to be a standard way of delivering power to domestic properties in France, so I guess if it presented increased risk in that environment they wouldn't do it.
 01 November 2013 07:47 PM
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largelunchbox

Posts: 363
Joined: 06 July 2008

not a problem,ive even had the local supply company install a 3 phase supply for me on a large house where 100a wasn't enough
 02 November 2013 10:13 AM
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aatomic69

Posts: 20
Joined: 23 August 2013

Some property's are just to large for single phase supply's so 3phase is installed.

There may not even be 3phase boards in the domestic property. Just separate consumer units fed from each phase. 240V each.
 02 November 2013 10:47 AM
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HarryJMacdonald

Posts: 254
Joined: 15 May 2002

As regards the safety of 400V in a house, to experience this you would need to touch 2 live conductors without touching either of them first so I agree with the move away from considering this especially dangerous.
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