ᐅ Are electrical cables allowed to be installed under a shower?

Created on: 3 Jan 2019 23:14
B
blaupuma
Hello everyone,

we are currently building, and the electrician has installed a cable under our shower. The cable then runs up through the shower wall and through the exterior wall (outdoor light).

Now I’m wondering if this is actually allowed?
The electrician says it is.

So the cable lies on the base slab.
There will be screed and insulation on top of it, and plaster and tiles on the wall.
(The cable is chased into the masonry.)
W
world-e
4 Jan 2019 14:17
In my opinion, it’s not completely irrelevant. Try googling "VDE 0100-701 minimum remaining wall thickness."
According to this standard, cables from other rooms are only allowed to be installed in a wall if the remaining wall thickness is at least 6cm (2.4 inches). Unless they are protective extra-low voltage or they are grounded and connected through an RCD, which should be the case for an outdoor light.
blaupuma4 Jan 2019 17:05
I also believe it is Zone 0 and you need to have a 5 or 6 cm (2 or 2.4 inches) clearance. I currently have maybe 3 cm (1.2 inches).
Knöpfchen4 Jan 2019 18:10
If the slots are very deep, they should be sealed again with a special insulating mortar. This was recently required by an expert on a construction site.
blaupuma4 Jan 2019 18:37
Slots are standard.
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Bookstar
4 Jan 2019 18:53
At least 6cm (2.4 inches) of screed will be applied. Where is the problem with that?
blaupuma4 Jan 2019 19:30
Bookstar schrieb:
At least 6cm (2.4 inches) of screed will be applied. Where’s the problem with that?

This concerns the shower wall.

There will be 1.5cm (0.6 inches) of plaster applied, plus tile adhesive, plus tiles.