I am a a sparky by trade, gardens throw up all sorts of issues if you wish to install a permanent supply and you really need to get a qualified tradesperson in to do a proper safe job that meets BS7671 16th Edition of the IEE Regs. This is a legal requirement under part P of the building regulations. No exceptions
However, if you wish to run a temporary cable, just use an extension lead, but make sure that the supply end, IE the house end is plugged into an RCD unit or plugged into a circuit that is protected by one. Lay the cable out of the way, somewhere where it wont get hit by a lawn mower or a garden spade. A hose pipe will provide virtually no protection to the cable as it is made of soft maleable plastic.
Check the cable frequently and think seriously about getting a proper job done. |