Equipotential bonding

In medical use areas of groups 1 and 2, the following conductive components must be connected to additional potential equalisation as well as an equipotential bonding rail to avoid potential differences between the components:

  • protective conductors;

  • external conductive components;

  • shielding against electrical interference fields;

  • contacts to floors with discharge capacity; and

  • stationary, non-electrical operating tables not connected with the protective conductor.

In medical use areas of group 2, potential equalisation bolts according to DIN 42801 must be provided in the patient’s proximity for the connection of mobile medical devices/surgical luminaires. Stationary medical devices and medical supply units according to DIN EN ISO 11197:2012-08 with integrated potential equalisation bolts which are equipped with a protective conductor connection do not require additional incorporation into the potential equalisation.