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Cheers.
@airhead - I have tested as much as possible with both volt meter and non-contact and everything above is dead; the electrician I had out does a lot of commercial work so trust his judgement. I removed another old 3 phase before (confirmed dead by same electrician) - they just scare the shit out of me because they are massive, even though I know they are not live.
They will be terminated at some point in the near future; but I only lease 1 part of the building so that will take a bit of time to sort, and this is blocking something I need to install by about 4cm, irritatingly.
lmamammal-
Fair enough, you're right to be scared of anything like that! The biggest part of the training I received is that it instills confidence that you have properly established any part of the system you are working on is dead and will stay that way until you've finished. I still get a hot sweat on occasions.
I wouldn't be too happy with the lack of indication that the remaining connection in that fuse box is live. Some 400v warning stickers on the front of the boxes would be nice.
Anyway if you're reading this I can assume it all went well. :)
Airhead
Yeah, you are good to go. They are dead from the top up.