The first method involves screwing the earthing wire with an M8 bolt into the hole in the lower lock of the wiring chamber.
This location allows easy access to the bolt and thus allows for quick assembly and maintenance.

This option uses the following elements:

Bolt M8x25 A4 – Fastener made of A4 stainless steel, resistant to corrosion and weather conditions.
Guarantees durability and reliability of the mechanical connection.  

Washer for M8 A4 DIN 6798A – a springy fan washer with external teeth, made of A4 stainless steel.
Increases the stability of the connection, preventing it from loosening under vibrations or oscillation. 

M8 A4 DIN 125 washer – Standard flat washer made of A4 stainless steel. Distributes loads evenly across the surface,
protecting it from deformation and mechanical damage. 

M8 A4 DIN934 Nut – Hexagonal nut made of A4 stainless steel, corrosion resistant. Ensures a durable and safe connection of elements,
preventing loosening even in difficult operating conditions.