BS 7671: 2008 - increasing use of RCD's.

or
POL_0125.jpg


inside is:
POL_0113.jpg
 
I'm still trying to find the drawing I saw a couple of weeks ago. It showed different supply types and CU configs for each.

However, Adam had a good memory re Hager, this is from their CU Guide and shows their TT layout. Swop the 100mA RCD for a 30mA and you are 17th edition ready!

Hagerdualtarifboard.jpg
 
I have come to the conclusion that until the red book hits the stands along with the red OSG then a lot of what we are discussing is fast becoming an urban myth.

I did have a copy of the DPC but it was a draft (and is now locked) so until the final version comes out let's not speculate too much.
 

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