Large number of 13A sockets in a steel building: Design considerations.

[malcolmsanford]

Lol I still can't see them, but take your word for it mate

 

[UKMeterman]

It is designed for 2*2.5mm to sit side by side.

 

[Mark42]

Thanks, John! Yes, Malcolm it is you: I reckon you've had too much desert sun Or you need a new monitor ...

It is pretty poor sleeving, from TLC. All a bit stuck-together and floppy, I don't like it much. I prefer to shrink-fit cable ID markers, but it's a waste of money for all that lot, which no one will ever see again.

 

[Mark42]

It is designed for 2*2.5mm to sit side by side.

OK. Ordered on-line just now!

Malcolm, joking apart, this is a massively interesting psychological effect, especially relevant when quality-assuring one's own work in many trades. Can you really not see those two brown cables? They are quite clear and absolutely in your face!

I can't remember what the effect is called, but I know psychologists have studied it. There is a book by Prof Richard Wiseman called ‘Paranormality: Why we see what isn't there’ which touches on it. Something about the 'gorilla in the room'.

Subjects are shown a video of people arguing in the street or something, but no one, when debriefed afterwards, remembers seeing the guy in a gorilla suit walking by. But he's there and absolutely clear. I reviewed the book on another forum where I annoy people:

On all things wondrous strange: ghosts, mediums, and rubber hands - Mark Ribbands - RichardDawkins.net

It’s all very fascinating.

 

[malcolmsanford]

To me they look like 2 conductors covered in black heat shrink/sleeving/neoprene, they don't look brown at all but there again I have old eyes