A system configured to comprise several groups of load devices (201, 220) and a management device, wherein: - each load device (201, 220) comprising a load and a detection device, wherein the detection device is configured to communicate with a management device and comprises: - a detector configured to detect a switching of a load, - a timer configured to determine and store a timing of the switching of the load, and - a transmitter configured to transmit information to the management device, which information defines the timing of the switching of the load as well as an identification characterized by - the management device configured to distinguish the groups of load devices (201, 220) from each other, wherein the management device comprises: - a receiver configured to receive the information from the load devices (201, 220), and - a controller configured to control the switching of the loads, wherein a first switching of first loads in a first group is configured to take place at a first moment in time, and wherein a first switching of second loads in a second group is configured to take place at a second moment in time different from the first moment in time; - which system is configured to commission the several groups of load devices (201, 220) at the hand of the information transmitted from each one of the load devices (201, 220) to the management device. - each load device (201, 220) comprising a load and a detection device, wherein the detection device is configured to communicate with a management device and comprises: - a detector configured to detect a switching of a load, - a timer configured to determine and store a timing of the switching of the load, and - a transmitter configured to transmit information to the management device, which information defines the timing of the switching of the load as well as an identification characterized by - a detector configured to detect a switching of a load, - a timer configured to determine and store a timing of the switching of the load, and - a transmitter configured to transmit information to the management device, which information defines the timing of the switching of the load as well as an identification characterized by - the management device configured to distinguish the groups of load devices (201, 220) from each other, wherein the management device comprises: - a receiver configured to receive the information from the load devices (201, 220), and - a controller configured to control the switching of the loads, wherein a first switching of first loads in a first group is configured to take place at a first moment in time, and wherein a first switching of second loads in a second group is configured to take place at a second moment in time different from the first moment in time; - a receiver configured to receive the information from the load devices (201, 220), and - a controller configured to control the switching of the loads, wherein a first switching of first loads in a first group is configured to take place at a first moment in time, and wherein a first switching of second loads in a second group is configured to take place at a second moment in time different from the first moment in time; - which system is configured to commission the several groups of load devices (201, 220) at the hand of the information transmitted from each one of the load devices (201, 220) to the management device.