You can daisy chain GFCI sockets

Can I connect a standard socket to a residual current circuit breaker?

The evil Greek

You should never chain two residual current circuit breakers together. If you install a residual current circuit breaker, you should only ever disconnect standard sockets from them. Several FI circuit breakers on the same circuit can trigger each other.

So yes, what you want to do is actually what you should be doing.

However, you need to ensure that you plug the new outlet into the LOAD terminals on the GFCI outlet. This switches the new socket to FI protection.

You should also mark the new sockets as FI protection.

See above how the duplex socket (standard) is fed from the residual current circuit breaker, NOT from the main line.

And in case it is unclear - the 3 gfci in the picture are not chained - they are connected in parallel. Only the standard socket is "chained" - or connected in series.

Pigrew

Perhaps it should be mentioned that 14/2 cables (shown in the picture) should only be used if your circuit breaker is 15A. If your breaker is 20A for this circuit, use a 12/2 wire.

The evil Greek

Good argument. The picture was raised from another spot and included the 14/2 so it's worth noting. Another way of recognizing whether the existing sheathing for the existing residual current circuit breaker is white is 14/2, if it is yellow it is 12/2. Color matching for electricians! : D.

Grant

Are there any safety problems that interlink the FI circuit breakers, or is there just the risk of disruptive journeys?

The evil Greek

AFAIK just annoying trips.

Brad Gilbert

@TheEvilGreebo you can't always come off the color of the sheath. I've personally seen 12/2 cables with a white sleeve and some with black sleeves.