"Andy Lewis" wrote
| I wish to lay an outside electrical cable to my garden shed 30 metres
| from house, what is the best sort of cable? Cheap but safe and can I
| bury the cable?

Steel wire armoured (SWA) cable is suitable for burial. It must be buried
deep enough it will not be disturbed/damaged, which usually means two forks
deep on lawn and deeper on beds with will be double-dug. You can get buried
cable warning tape to bury in the trench just below the surface.

http://www.tlc-direct.co.uk/Main_Ind...SWA/index.html

At 30m you will have to do proper calculations to prove the cable size is
suitable taking into accoutn voltage drop and fault impedance etc

Owain