The invention relates to a bus system comprising a bus line, a plurality of consumers of electric power which are connected to one another via the bus line, having a plurality of separate electric current supply units which each make available an electric voltage for the current supply with at least one consumer. The bus system is divided into segments each having one or more consumers respectively associated with a current supply unit and which each have a first current supply line and a second current supply line. The first current supply line and the second current supply line are respectively not directly electrically conductively connected to the first current supply line and to the second current supply line of a different segment and are preferably separated from the first current supply line and the second current supply line of the other segment in a galvanic manner.