Foundation formwork made of Poroton bricks

So much for that.

So much for that.

If the gentleman is too proud for that...

to ask for an answer in the forum?

What is he trying to do? Either you don't answer at all or you answer properly because you know the answer. And that's the sad thing. You don't even try to help him, but rather delight in the fact that you know it and he doesn't. Do you want the user to lean forward to you so he gets the answer? You are the biggest whiner I've ever come across in any forum.


Basically, in the event of a fault, you could have voltages on certain devices. So you would get - to put it simply - a shock. Of course, nobody wants that.
As an example, I'll mention the classic lamp in the living room that you screw to the ceiling. Often there is a small green-yellow wire inside that is connected to the lamp housing and via all cables to the ground. However, if the connection is poor and one of the other wires in the lamp came into contact with the metal housing, voltage (current) would be present on the housing because the built-in protective systems would not trigger correctly. For this reason, one wants to have a very good connection to the ground.

In the case of a lightning strike, I assume the risk of electronic devices being damaged is higher?

Has any insurance ever wanted a protocol according to this standard in such a case? Because if that were the case, and I needed the protocol in the event but did not have one, then that would be a major defect for me.

In the case of a lightning strike, I assume the risk of electronic devices being damaged is higher?

In advance: Lightning is not just lightning.

The most common lightning strikes in Germany have currents around 25 kA, over 50 kA only make up a single-digit percentage, but "wild house-shakers" (Kachelmann jargon) > 100 kA and extreme lightning > 300 kA like the one in Menden-Bösperde also occur.

Direct strikes with an impulse shape of 10/350 µs contain more energy than resulting overvoltage damage in the vicinity with an impulse shape of 8/20 µs, which, however, cause damage sums about four times higher. Internal lightning protection against overvoltages as a consequence of lightning strikes and also switching operations that penetrate via energy and telecommunications lines and can primarily destroy sensitive electronics is therefore more urgent than external lightning protection.

Has any insurance ever requested a protocol of this standard in such a case? Because if that were the case, and I needed the protocol in an emergency but didn't have one, that would be a serious defect for me.

Protocols for foundation/ring earth electrodes of new buildings by licensed electrical contractors have only been required since DIN 18014:2007-09. I have not yet heard of a damage case in which the insurance wanted to inspect the acceptance protocol.

BTW: For protection against electric shock—as long as the PEN conductor of the distribution network operator is intact—a complete equipotential bonding is sufficient. Therefore, in the b.v.s statement on foundation earth electrode grounding systems, earth electrodes are only considered necessary for buildings with lightning protection systems and roof antennas.

The fact that the now obligatory overvoltage protection according to DIN VDE 0100-443 and -534 for new buildings requires an earth electrode and that lightning currents are to be conducted broadly into the earth is ignored by the b.v.s, which is why I, as an entrepreneur registered in the craftsmen's roll for information technology, do not share the b.v.s view.