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Topic Title: RCBO's in TT systems
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Created On: 14 November 2008 09:41 AM
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 14 November 2008 09:41 AM
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Beagle10

Posts: 30
Joined: 01 August 2007

Hi, Could anybody clarify for me if it is permissible to use single pole rcbo's on a TT system?
If there were a 2pole RCD at the origin would rcbo's further on in that installation need to be 2pole so not to create nuisence tripping?

Opinions apprciated thanks,

Beagle...
 14 November 2008 11:21 AM
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normcall

Posts: 8111
Joined: 15 January 2005

On TT, it seems a little pointless adding RCBOs after the main RCD/switch.

-------------------------
Norman
 14 November 2008 11:55 AM
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Avatar for GeoffBlackwell.
GeoffBlackwell

Posts: 3492
Joined: 18 January 2003

See 531.2.9 and more generally 314.

Regards

Geoff Blackwell
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