Any idea what this is?

It actually is the wiring for the dishwasher. So the sparky is working away and we are being forced to take back all the slurs we have cast on those wonderful tradesfolk as we have had 'workmen' there for the past two Saturdays.

So I think the plumber is due next, then the Color Bond roof will go on, followed by a render of the internal walls, they do the ceilings then plaster the walls and bang in the cornices.