Length of Radial

[pcsparky]

What are the current regs for the maximum length of a radial circuit using 2.5mm T&E.

I have one in my loft that serves 5 loads (4 sockets and 1 FCU), in total using no more than 1000 watts. It is connected to the RCD side of the CU.
It is not covered by anything but does run next to other cables at times. It is about 25m long.

Is this safe?
And if so what rating MCB should it have?

 

[ban-all-sheds]

According to the OSG 27m is the limit for 2.5mm² on a B20.

 

[ricicle]

According to the OSG 27m is the limit for 2.5mm² on a B20.

Not that it would matter if it was a B20, C20 or D20

 

[Spark123]

The length may be limited by efli for type C or type D, depending on supply type.

 

[DESL]

In my limited experience I haven't seen a D type MCB to fit a typical domestic board

 

[ricicle]

The length may be limited by efli for type C or type D, depending on supply type.

Blonde moment there - I was only concentrating on the voltage drop aspect, not EFLI