oh and what would you have done holmslaw? looks professional to me.
If your referring to the red washers im pretty sure you will find they are ip sealing washers.
Used to use them at work between explosion proof glands and boxes so im pretty sure they are ideal for the job if we were...
don't suppose you know the dimensions of that enclosure and where you got it from do you BAS? :D
looking for one to power all me pond lighting, pumps and shed.
Get rid of the insulation run and you can use 16mm 3 core on a 63A switchfuse with a volt drop of 6.59volts. If you cant avoid the insulation though then its going to have to be 25mm.
Personally i would have a switchfuse fed straight from the mains via a henly block, armoured from this to sub meter, then onto the isolator, then into the Consumer Unit.
Stops anyone stealing the leccy :D