Wiring sockets, switches

Over 30 years ago, 10MBit was "standard"... No one believed in 1 or 10 or even 100GBit...

That is why cables are laid to be replaceable. Nothing is more future-proof!

That's why the cables are installed to be replaceable. Nothing is more future-proof!

Yes, we were aware of that about 30 years ago as well. But when renovating old buildings, it's sometimes simply not feasible due to lack of space. Also, all the other cables in the wall are plastered in...

Well, 1.5mm² = 10A fuse.

Where did you get that from?
How long are the cables supposed to be?

Where did you get that from? How long are the cables supposed to be?

With us, they take this recommendation and use it in construction. I know it no other way. Already 5 years ago, I was advised to lay 2.5mm² for sockets and 1.5 for lighting with 10A fuse. Two companies I asked wanted it that way. The longest cable in the new building will be about 30 meters.

The classic. Industrial electricians who think "I can lay that little bit of cable myself" and then quickly realize "uh, what do I have to consider? And how do I even do that?"

Forget it, wait for the master. Otherwise, you'll end up ripping everything out again.

A look in the reference book proves him right, by the way. Laid in installation conduit inside thermally insulated walls, a 3x1.5 NYM cable may only carry 13 A, meaning it must be fused with 10A. And then there's also the derating factor, because in midsummer the wall temperature can sometimes exceed 30°C.

By the way, a look into the table book confirms him. In thermally insulated walls, laid in the installation conduit, a 3x1.5 NYM may only carry 13 A,

Do you believe that a 3NYM has three loaded conductors?