Blowing sockets and popping RCD

[Josh555]

A client asked me to add two sockets in their bedroom

I took power from two sockets in the lounge which is behind the bedroom wall.

I ran a cable out of each socket for the new socket

The problem is it now is tripping the RCD and blowing the old Existing sockets and light switches

But the new sockets I added still work fine

The old existing sockets and switche are blown and unusable

When I try to reset the RCD It pops and Sparks down

Any idea to why this is happending

 

[timhoward]

I didn't know that there is a new x1 AC RCD test ? How does that work compared to the old one ?.

In short, just omit the x5 tests.
I still test at x 1/2 for both waveforms as I want to know it’s not overly sensitive and then the required x1 on both waveforms.

Now Auto mode is less useful i tend to test all of them at 1/2 and then all of them at x1 to avoid fiddling with the tester too much.

 

[goasis]

In short, just omit the x5 tests.
I still test at x 1/2 for both waveforms as I want to know it’s not overly sensitive and then the required x1 on both waveforms.

Now Auto mode is less useful i tend to test all of them at 1/2 and then all of them at x1 to avoid fiddling with the tester too much.

I think it's still a requirement to ensure they dont trip at 50%

 

[Lister1987]

In short, just omit the x5 tests.
I still test at x 1/2 for both waveforms as I want to know it’s not overly sensitive and then the required x1 on both waveforms.

Now Auto mode is less useful i tend to test all of them at 1/2 and then all of them at x1 to avoid fiddling with the tester too much.

Worth remembering that 7671 is a minimum, if you want to carry on using auto and doing 0.5x 1x 5x and Ramp then there is nothing stopping you.

The cynic will say that the 'new' testing regime may be "better" but then we remember that OEMs are on JPEL64 and would favour the reduced testing as it would result in fewer returns

 

[timhoward]

Worth remembering that 7671 is a minimum, if you want to carry on using auto and doing 0.5x 1x 5x and Ramp then there is nothing stopping you.

Agreed, and circumstances dictate what's worth doing.
Ramp tests are certainly useful for lots of situations.
But even under the old regime if a modern RCBO tripped at under 40ms on the x1 test then increasing the current for a x5 test is never going to slow it down and IMHO it was a pretty pointless test in a lot of cases.