On 22/03/2019 10:30, John Rumm wrote:
On 22/03/2019 08:50, The Natural Philosopher wrote:
On 21/03/2019 23:45, ARW wrote:
BTW what now requires YOU to use a 30mA RCD for the bathroom lights?
The regs are not retrospective so swapping a bathroom light should
not require you to install RCD protection.

The regs are retrospective to any 'material alteration'

Whether fitting a new bathroom light is 'material alteration' is a
moot point

Swapping a light fitting would be a like for like change and not an
alteration to the fixed wiring. Its not notifiable under part P either -
even in a bathroom.



Moving a light or fitting an additional one in a bathroom would require
30mA protection in a bathroom under the 17th edition.

I'll have to check but I presume that now means in all rooms under the
18th edition.

You could argue that it would be good practice to fit the RCD protection
if the supplementary bonding is not present.




--
Adam