PoE Injectors › Forums › General Topics › I have a 12 port gigabit injector with redundant power › Reply To: I have a 12 port gigabit injector with redundant power
Which cable arced, an Ethernet cable or a power cable ? An arc when connecting the dc power cord is normal – it is best to connect the AC cord after the dc cord is connected.
Connect one power supply to the mode A input and try all ports – which ones work, are there any arcs? Try again with the mode B input
If all ports work with one power supply, then try again with both.