3 ms·
The relevant code is DIN 18014. And it distinguishes between different kinds of ground plate. Some are considered sufficiently "earth-feeling" to be considered
by brazzy 7y ago
The relevant code is DIN 18014. And it distinguishes between different kinds of ground plate. Some are considered sufficiently "earth-feeling" to be considered ground themselves, others require separate corrosion-resistant grounding to be put in the earth around them. Zinc-coated steel is not considered sufficiently corrosion-resistant.
Here's an article in German with some pictures of how it's done: https://www.elektro-plus.com/elektroplanung/fundamenterder/ausfuehrung-des-fundamenterders https://www.elektro-plus.com/elektroplanung/fundamenterder/a...
- myspy 7y agoInteresting to read. I forgot that below the concrete plate is insulation and they put something in the foundation that touches the earth.
- petre 7y agoAllright. This makes sense as it reduces the electro corrosion on the rebar and also prevents other unfortunate accidents such as the hot wire coming in contact an exposed metal part or a metal pipe which is itself in contact with the rebar. I have seen a scenario where ligtning struck a DHW solar panel installation, skiped from the plumbing to the rebar and also melted hole in the plumbing while doing so, draining all the antifreeze on the walls. In addition it destroyed all the electronic appliances in the house. If the panels along with the rebar would have been properly grounded, such as scenario would have been mitigated.