FRITZ!Powerline 510E Service - Knowledge Base
Using FRITZ!Powerline in different phases of the power supply
FRITZ!Powerline adapters can also be used in different phases (phase conductors) of the of the home's power supply.
FRITZ!Powerline adapters transmit data to the electrical wiring as a high-frequency signal. This results in "crosstalk" from one phase to the other if the phase conductors run parallel over a distance of at least 0.5 meters. Since this is the case in almost all buildings, FRITZ!Powerline adapters can also be used in different phases.
However, you can only achieve the best data throughput if you use FRITZ!Powerline adapters within the same phase.