16amp radial circuit additional sockets

[Rob Johnson]

Hi all

I am looking to add 2 additional 2G sockets to an existing 16amp radial circuit that has 2 1G sockets on it.
It’s a 3 story house and the consumer unit is in the Cellar. There are two rooms on the top floor and two radial circuits are feed from the one 16amp MCB with no RCB fitted.
I want to add 2 more 2G sockets in both rooms on each circuit. The cable is 2.5mm twin and earth.
My question is can I add the additional sockets to the existing raidial circuit with the 16amp MCB or should i / could i up rate the MCB to 20amp?

Thanks

 

[123]

I wouldn't be changing those except removal of MCB's and replacing them with RCBO's ........... on the circuits that need RCD protection

There is already an up front RCD protecting the left hand consumer unit. The photo's aren't clear enough to show its rating however.

 

[Richard Burns]

Effectively there is RCD protection to the consumer units and if it is 30mA then adding the additional sockets would not be a problem, 100mA would not be acceptable for a circuit modification.
However the single RCD is not a good arrangement as it does not allow circuit level separation on earth faults.