PowerCon connectors are color coded to insure that power flows in the correct direction (from source to device) and to insure that no mis-mating is possible.
Power at the source would flow out of a grey Neutrik NAC3MPB-1 panel mount connector and into a locking, also grey, NAC3FCB connector on one end of a PowerCon equipped cable.
At the other end of the PowerCon Cable, power would flow out of a NACEFCA (blue) connector and into a panel mount NAC3MPA-1 connector (also blue) to supply power to the device requiring it.
Power In-Cable Mount-NAC3FCB
Power Out-Cable Mount-NAC3FCA
Power In-Panel Mount-NAC3MPA-1
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