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Understanding 411.3.4, RCD's for lights.

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HappyHippyDad

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I just wanted to make sure I understood the new regulation above.

I am about to replace some ELV downlights with mains voltage, do these now have to be 30mA RCD protected?

At present they have 100mA protection and the earthing is TT.

Cheers.
 
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This is going to create quite a bit more work on some occasions then isn't it!
There is a spare way on the 30mA side but then that means putting the lights on the same side as the sockets.
It's a starbreaker board and there seems to be so many different configurations of the RCD's that I'm bound to get the wrong one if i choose to replace the 100mA RCD! They all have different holes in different places. (should have opened the CU up!)
I think it's the same one as last time, i.e the one you gave me Tel, but not sure.
[ElectriciansForums.net] Understanding 411.3.4, RCD's for lights.
 
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Actually after a quick scan of the net..
Is this the right one to replace the 363/S100
https://www.NoLinkingToThis/p/crabtree-starbreaker-63a-30ma-dp-type-ac-rccb/29042
 
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I haven’t the latest addition, but under the previous, guidance from my Scheme, when replacing luminaries (like for like) in a bathroom for example, there was no requirement to ensure of addition protection.

The installation of additional luminaries would.

What does the new reg state?
 
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Midwest said:
IMO that would be the installation of new circuits, or the alteration of existing ones. I’ve been wrong before, guess one would need to ask a grown up.
Click to expand...
I've been asked to move the security light motion detector "round the corner of the building". It's all surface mounted cables and the associated light is not moving. I'm thinking an upgrade to RCD isn't mandatory, but very happy to be shown the error of my ways.
BTW - there is an earth at the fitting :) .
 
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Wilko said:
I've been asked to move the security light motion detector "round the corner of the building". It's all surface mounted cables and the associated light is not moving. I'm thinking an upgrade to RCD isn't mandatory, but very happy to be shown the error of my ways.
BTW - there is an earth at the fitting :) .
Click to expand...
Assuming this is domestic then you have two choices because the circuit has been altered/extended.
1. Put in place additional rcd protection.
2. Carry out a risk assessment which must prove that omitting additional rcd protection is not detrimental to the safety of the installation as your works are a departure from BS7671.
 
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