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Topic Title: RCDs
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Created On: 02 August 2012 08:43 PM
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 04 October 2012 09:44 PM
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weirdbeard

Posts: 1901
Joined: 26 September 2011

Originally posted by: AJJewsbury



I've been thinking again about this one. 705.411.1 (by the numbering) is modification to the requirements of section 411 - i.e. ADS.

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Must admit that although i've worked on farms in the past for employers, it's only fairly recent that i've had to get stuck into the regs concerning these - just having a quick look at the 16th and the system in that seems a bit more common sense - ie where the special location requires something different to the standard regs it often says reg xxx-xx-xx is relaced by reg 605-xx-xx.

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 04 October 2012 10:45 PM
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OldSparky

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if you think about it all tails on a TT supplies are un protected...
 05 October 2012 10:18 AM
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AJJewsbury

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if you think about it all tails on a TT supplies are un protected...

Not protected by ADS, but hopefully protected by double or reinforced insulation or equivalent.
- Andy.
 07 October 2012 07:39 PM
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weirdbeard

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Originally posted by: slittle




Bear in mind you won't get a PME connection anyway so you've got to TT it and the first protective device on a TT has to be an RCD.



From a description by the owner, it sounds like it's going to be TN-S, he says theres a separate earth cable been run between the intake and the transformer, that has been staked at several points in the trench, though I've yet to confirm this with the authoroties.

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IET » Wiring and the regulations » RCDs

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