Method and system for branch circuit marking

A system for electronically marking a plurality of branch circuits of an electrical installation of an engineering structure, the plurality of branch circuits comprising a first branch circuit and a second branch circuit, wherein the system comprises:

• one or more signalling devices comprising a first connection interface and a second connection interface;
• and
• a signal receiving device configured to receive an identification signal, the identification signal being the first identification signal or the second identification signal;
• wherein:
• the first connection interface of the one or more signalling devices is communicatively couplable to the first branch circuit and the second connection interface is communicatively couplable to the second branch circuit;
• the one or more signalling devices is/are configured to provide a first identification signal on the first branch circuit and configured to provide a second identification signal on a second branch circuit;
• wherein the second identification signal is different from the first identification signal;
• the one or more signalling devices further comprise(s) at least one input terminal for receiving a power supply signal and is/are further configured to route a power supply signal to the first branch circuit and to the second branch circuit;
• the one or more signalling devices further comprise(s) a filter communicatively connected to the at least one input terminal, the filter being configured to attenuate a frequency of the first and/or second identification signal, and
• the one or more signalling devices is/are configured to transmit the first and/or second identification signal while the power supply signals are routed through the one or more signalling devices;
• and
• wherein the signal receiving device:
• is configured to receive the signal from the respective branch circuit wirelessly, or
• comprises a probe, which is wiredly connectable to a wire of the respective branch circuit, and is configured to receive the signal by a wired connection by means of the probe.