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Topic Title: wiring 3ph socket
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Created On: 04 December 2012 10:17 PM
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 04 December 2012 10:17 PM
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jasiek

Posts: 4
Joined: 04 December 2012

Hi,
I need to wire 3ph 32Amp socket at work, does this socket need to be rcd protected if so what type rcd should i use 3ph rcd ?
 04 December 2012 10:33 PM
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spinlondon

Posts: 4439
Joined: 10 December 2004

Is the socket to be used to supply mobile equipment outdoors?
If yes, then it will require 30mA RCD protection by means of a 3phase RCD.
If no, then it will not require RCD protection.
 04 December 2012 10:42 PM
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DOUGIE1000

Posts: 4168
Joined: 13 August 2005

you would need to check requirements with 411.3.3.

We just this week replaced an exisitng commando socket to switch isolator socket outlet at 32amp 3phase and earth for a crane lifting device that is mobile. We did not install RCD due to unwanted tripping and the fact our client has spend some considerable £ sending two of its workforce to Germany for training and operation is restricted to use of a key.

I would call that skilled person as they have to install the 10meter trailing socket overhead using the crains lifting gear to lift cable from the ground to prevent damage etc.

-------------------------
Dougie
Power Plus Electrical.co.uk

My mission is to live as long as possible......so far so good!
 04 December 2012 10:44 PM
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spinlondon

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Not aware that there are any exceptions for providing RCD protection for mobile equipment outdoors.
Hopefully, it won't come back and bite you.

Edited: 04 December 2012 at 10:56 PM by spinlondon
 04 December 2012 10:47 PM
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DOUGIE1000

Posts: 4168
Joined: 13 August 2005

Spin, i was talking inside location. :-)

-------------------------
Dougie
Power Plus Electrical.co.uk

My mission is to live as long as possible......so far so good!
 04 December 2012 10:57 PM
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spinlondon

Posts: 4439
Joined: 10 December 2004

Looks like I'll have to pick some specs as well.
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