Hi,

We would like to run some SWA from the house to a separate garage, total run
is about 35 meters, mostly buried underground.

Using the TLC calculator, here
http://www.tlc-direct.co.uk/Technica...Min+Cable+Size

or here for a short URL http://tinyurl.com/2coh6or

Do I need to say it is a lighting circuit, as there will be some lighting on
it (standard 6A, for a light in the garage).
The main power will be the 20A radial.

If I say it is lighting, then it wants me to use 10mm cable for a 32A
circuit, which seems overkill to me?

Thanks!