Inter-connections
To prevent the risk of sparking, overvoltage or electrocution, it is not enough to provide grounding.
For example, during the conduction of a lightning strike, a pipe of a heating installation may come into contact somewhere (direct or indirect) with an electrical conductor, which may cause dangerous voltage to appear between the pipes and the radiators. Thanks to equipotential connections, the leakage current from a radiator will not pass into the body of the person who touches it, but will take the direction of the earth.
Equipotential connections are made by electrical contact between all the earthing elements and the masses. Even with good earthing system, there is always a risk of voltage appearing on conductor elements which are not part of the electrical installation.
This is why the following elements must be connected to the grounding of the lightning protection (non-exhaustive list):
- Accessible metal parts of the building (structural parts, on the roof, in the immediate vicinity of the grounding conductor downpipes, etc.)
- Main gas and water pipes
- The main central heating pipes…
You will find all the accessories necessary to make these connections in our Earthing and Accessories catalog.