Lightning protection and earthing is important for a long service life of the equipment and for the personal protection of the operator. Many inexperienced companies, however, forego this in favor of an inexpensive offer. The result is total damage or a total failure of a system. This additional investment makes sense, especially for water pumps and PV systems, since these are often the highest point (water tank or solar modules).
The BBM includes earthing sets in all of its projects!