Every tube also needs to be connected to the powersupply. Similar to the signal, it is possible to connect the first tube to the mains power supply and than connect the tubes to each other. If the tubes are next to each other, you can simply plug them together. If you need to bridge a certain distance, it is recommended to use the powercables with IP 44 plugs, especially if it is an outdoor installation. For the powersupply, it is recommended not to put more than 50 pcs together in one line. Of course, you can split the powersupply into different sources while maintaining 1 line for the signal.