Interconnections
To prevent the risk of sparking, overvoltage or electrocution, it is not enough to simply perform grounding.
For example, during a lightning strike, a pipe in a heating system can come into contact (directly or indirectly) with an electrical conductor, potentially creating a dangerous voltage between the pipe and the radiators. Thanks to Equipotential Spark Gap, the leakage current from a radiator will not pass through the body of anyone touching it, but will instead be carried to ground.
Equipotential Spark Gap is achieved through electrical contact between all grounding elements and exposed conductor parts. Even with proper grounding, there is always a risk of voltage appearing on conductor elements that are not part of the electrical installation.
This is why the following elements must be connected to the lightning protection grounding system (non-exhaustive list):
- The accessible metal parts of the building (structural parts, roofing, in the immediate vicinity of lightning rod downpipes…)
- The main gas and water pipelines
- The main central heating pipes…
You will find all the accessories needed to make these connections in our Grounding and Accessories catalog.