Potential equalization? Ring earth or foundation earth...

I know all that from the standard. I also know that a registered EFK has to measure and inspect it. For me, it’s solely about a reliable and neat connection of the equipotential bonding and ring earth with a mesh size of 5x5 in V4A. The electrician simply said I should lead 2 connection tabs out of the WU floor slab. I won’t do that because then I would have a non-tight penetration there. That is also why I am asking if I can embed 4 grounding points in the floor slab.

My concern is solely about a reliable and nice connection of equipotential bonding and ring earth conductor with a mesh size of 5x5 in V4A. The electrician just said I should simply lead 2 connection tabs out of the WU base slab, but I won’t do that because then there would be a non-tight penetration. That’s why I’m asking if I can embed 4 grounding points in the base slab

Whether two additional stainless steel connection tabs besides the connection tab are enough to comply with the max. 20 m rule cannot be assessed without a floor plan.

I have doubts that there even is a leading electrician, because otherwise they would clearly specify the way to go. Grounding points are primarily installed in the formwork above the water-bearing layer, with waterproof execution also possible below it.



Trying to install such a component in the base slab is a doomed harebrained idea.

Whether four (!) waterproof sleeves are possible must be decided by your architect/building physicist.

Whether two additional NIRO connection tabs besides the connection tab are enough to comply with the max. 20 m rule cannot be judged without a floor plan.

Quote above only excerpt.

Highly qualified contributions.

Expert knowledge. Just said like that.

That is what distinguishes this forum. Professionals also say something once in a while without trying to sell something.

Classy. Great. I like it (even if I only half understand 66% of it..., since I am not an electrical specialist).

Keep it up.

Apart from that: My good friend (master electrician) also advised me extensively back then regarding equipotential bonding ("grounding"). That is a very safety-relevant matter. It must function reliably over many years. Just recently I talked to him again about the topic. After all, he chose an expensive solution and explained again why and how.

I am very glad that this matter at (on) my house was professionally done by the expert with heart and mind.

OK. Dipol comes from BaWü. People there can do everything anyway, except Standard German.
I know. I can't talk to them. A little joke - I am only half from BaWü, half from Bavaria, and here in NRW in exile.

Best regards
Thorsten

Whether two additional stainless steel connection flags, aside from the connection flag, are sufficient to comply with the max. 20 m rule cannot be assessed without a floor plan.

The house has a floor plan of 10x11m, so just slightly over, but half a meter should not be a problem.

I doubt that there is even a lead electrician, otherwise he would clearly specify the direction to take. Grounding points are primarily installed in the formwork above the water-bearing layer, and in waterproof design also below it.

Electrician. He's there because otherwise I wouldn't have good access to my KNX components; he does the final inspections for me and provides the measuring device for my 0100-600 measurement.

Trying to install such a component in the floor slab is a doomed-to-fail harebrained idea.

Yes, this sleeve is intended only for walls and logically does not work with floor slabs.

I was thinking more of one like this.
It is also for connecting to reinforcements and grounding as shown in the pictures; I would actually say it is also a floor slab.

Best regards, Roger

Why make it simple when it can be complicated? A completed NIRO wire with clamp holds more tightly in my opinion and is also capable of carrying 200 kA lightning current.

This grounding fixed point is designed for above-ground use and is certified according to DIN EN 62561-1 Class N = 50 kA lightning current carrying capacity.

The extension rod is absolute nonsense and an "invitation" for someone to step on it during concreting.