That doesn't surprise me, old drawings are rubbish Thames water are shocking

(Nicki Minaj, Tue 26 Jan 2021, 15:35, archived)

We've got an old lead sheath armoured cable in a basement that just has a little sign that says
"Of unknown supply, possibly live" and its my favourite cable. We had to build a wall round it recently.
( Windy Pig I'm naturally quite suspicious about the moon., Tue 26 Jan 2021, 15:37, archived)