£500.00 delivery? Apparently not. Seems it's pretty standard gear these days. Chances are they'll have it in their vans anyway.
So now that you've removed the busses from the box, how are you looping all your neutrals, etc.?
One dodge I used to use when I needed 240ac on a new dwelling that hadn't yet been hooked to the grid was to shove 240 from the portable generator direct into a 13A outlet. Totally against all the rules, but saves a lot of messing around at the box when you only need a temp' supply.
I just hit the Post button then spotted the message from Russell....
Sorry, bud, I didn't mean to imply an automatic changeover. I was meaning a manual one. Auto is surely the way to go, but I don't think the utility company's generosity stretches that far. A manual version, depending on the type of dwelling, would either be in a MEM-type metal-clad enclosure, or, more usually, and ABS enclosure. You've probably seen them yourself already. Approx. 10" square box, handle on the front which makes a hefty 'clunk!' when it's turned 90-degrees.