new circuit for the attic

[nfredy]

I need some advice ..I need to install new wiring in the attic / loft I found a cable that used to supply power to the immersion water heater tank located in the upstairs bathroom I was wondering if I could use this cable and create a new radial line for the attic's ligthing and power sockets The idea is to fix a 30 amp junction box in this cable and once the ligths and sockets are installed returning the cable to the original junction box therefore creating a new radial circuit .

 

[Softus]

That would not be good practice, because you'd lose lighting when the circuit is tripped by, for example, a faulty appliance.

For the lighting circuit you'd be better off extending the upstairs lighting circuit into the attic.

 

[TopTrumper]

Yes, you have the right idea.
Dont mess with your existing lighting.
Your old immersion should be fed by a 16amp breaker from c.unit, take the cable from this in immersion cupboard and put it onto a garage type c.unit, not expensive, then run your power sockets from the 16amp and take your lighting from the 6amp. You will probably get a unit with the rcd as well so happy days..

 

[nfredy]

thanks for the advice