Andy C
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- Reaction score
- 19
I have a replacement consumer unit coming upon which is currently off a TT system with a nice low reading on the earth. There is no chance of the DNO converting to TNCS. No SPD or AFDD as per client.
I intend fitting a new Dual RCD consumer unit.
I have researched this site and there was talk of the main switch being swapped out for a 100mA time delayed RCD. Albeit as I understand all this will protect is the internal wiring from the main switch to the RCDs. The use of the glands and cleating of mains tails would reduce the chance of any damage.
1/ I am led to believe that a dual RCD board would not protect all the circuits.
2/ I believe that a dual RCD would be permissible and would not lose any protection even if one RCD was to trip.
My questions are which is correct 1 or 2, i believe its 1, secondly would you still replace the main switch with a time delayed RCD.
Thanks in advance.
I intend fitting a new Dual RCD consumer unit.
I have researched this site and there was talk of the main switch being swapped out for a 100mA time delayed RCD. Albeit as I understand all this will protect is the internal wiring from the main switch to the RCDs. The use of the glands and cleating of mains tails would reduce the chance of any damage.
1/ I am led to believe that a dual RCD board would not protect all the circuits.
2/ I believe that a dual RCD would be permissible and would not lose any protection even if one RCD was to trip.
My questions are which is correct 1 or 2, i believe its 1, secondly would you still replace the main switch with a time delayed RCD.
Thanks in advance.