Talking about home electrics.
I was once rewiring a semi detached house prior to a young couple moving in(condition of the mortgage.)
Old fuse box was completely removed nothing connected to the meter and we were taking out old cable an fitting new.
Poked a bit out cable hanging out of the wall in the utility room, a big flash and a bang, screwdriver now 3 inches shorter.
2 minutes later next door neighbours are asking if we can look at their electrics as everything has gone off.
Seems that at some point previous tenants were pinching electricity from their neighbours.