Isolator or RCD?

[DIYWell]

So ... what shall I add in?

Big cable comes in and feeds DB5. Tails come out, through the meter, and supply DB4.

I'm going to replace the meter and tails, but I'd like to be able to isolate DB4 separately. I'm thinking I'll put a DP 100A isolator in between DB5 and the meter. However, as these are rewireable fuses and there isn't a RCD to be found, should I swap the switch for a DP RCD? Or fit both?

 

[333rocky333]

The Db has about 12 circuits, is against the regs now to have all that on a single 30ma Rcd

 

[DIYWell]

DB4 has 4 circuits connected; 2 lighting, 2 sockets. DP isolator it is then.

 

[333rocky333]

I guess maybe you could have an Rcd then. it could make the circuits safer.
All depends if the 4 circuits going off causes inconvenience.

 

[DIYWell]

I could also put a 100mA type S RCD downstream of both DBs to protect the wiring.

 

[winston1]

The Db has about 12 circuits, is against the regs now to have all that on a single 30ma Rcd

What reg would that be then?

 

[RF Lighting]

It is not my job to find reg no’s for you.

You can look it up as well as anyone else.

 

[333rocky333]

Winston, at the time of posting it was not clear only 4 circuits in use, in what looks like a Fuseboard which from memory has about 12 ways.

It defeats the object of 314.1 (i) for starters
Ever wondered why, Dual Rcd boards are suddenly more popular since the 18th came out