ZANDZ Technical Center regularly provides recommendations and advice in the field of grounding and lightning protection. Our experts are ready to assist in the issue of any complexity in the form of an individual consultation and offer a comprehensive solution in the form of calculation and selection of equipment that you need. Today we answer a question from our reader about natural grounding.
Question:
There is a single-family house, where electricity comes from a concrete pillar zero-phase voltage of 220 V. At the distance of 0.5 meters from the house and the depth of 18 meters there is a pipe 133 mm in diameter. The path from the pipe to the input into an electrical panel in the house is about 25 meters. Can I use this pipe as a ground electrode? If yes, which metal structure to use to connect it to the electrical board?
Answer:
The pipe 133 mm in diameter can be used, it will serve as a very good grounding. It is best to lay a tape at the depth of 0.5 m and at the distance of 1 m from the foundation from the pipe to the electrical board. It will provide additional current spreading. The tape can be attached to the pipe with a clamp. The clamp is also used to connect the tape along its length and is mounted on the end nearest to the electrical board, where a grounding conductor, which is connected to the ground bus, is connected to the clamp. Below there is a list of the materials assumed for use. Read more about the efficiency of natural and artificial grounding here.
| № | Fig. | Product item | Product | Quantity |
| 1. |  |
GL-11075-20 | GALMAR copper-bonded steel tape (30 * 4 mm; coil 20 meters) |
1 |
| 2. |  |
GL-11075-10 | GALMAR copper-bonded steel tape (30 * 4 mm; coil 10 meters) | 1 |
| 3. | .jpg) |
ZZ-005-064 | ZANDZ clamp for conductor connection (D14; up to 40 mm) |
3 |
| 4. | .jpg) |
ZZ-500-103 | ZANDZ Grounding conductor (3m; S25, single-core, with a tip for the bolt D8) |
1 |
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