Extension Radial circuit

[elfreddo]

Advice Please
About to install a radial circuit for an extension.
The feed will come from a spare 30A plug in mcb from an old wylex cu and run in 4mm T&E.
There is currently no RCD protection on any of the circuits and my concern is that this new circuit will probably feed appliances outside, hence rcd protection is a must.
My options are to install a stand alone rcd fed from the spare fuse way then onto the circuit or to replace the complete cu for a split load type.
Any thoughts

 

[brown-nought]

Depends on your priorities/budget - off the top of my head ...

If you have time consider replacing the CU now.

If the extension is more urgent, buy an RCD and 2 mod enclosure. Then later replace Cu and re-ruse the RCD.

Obviously if you replace the CU now you could consider the RCBO route as well.

Main thing is the work you are doing now complies.

 

[elfreddo]

As expected,
Cheers
Ps Do you know if the local supply authourity charges for up grading the service fuse as it is only a 60A. A bit low or is this standard for a TN-S.
Regards