The main cable (SPT-3) of 15 metres has 6 fixed connectors distributed over the main cable to connect your lamps to. The main cable can be combined with a transformer of maximally 150 Watt.
With this main cable of 15 metres, you purchase a ready-made system. There is a fixed connection point for your lamps every 2 metres. All Garden Lights lamps have a cable and connector suited for connecting to the fixed connection points, so you do not have to purchase separate accessories for this system. This is a SPT-3 cable.