When would we implement the Cence low-voltage system for lighting, instead of the high-voltage system?

The Cence low-voltage system would be employed for projects that don't require more than 100 W per load. Low-voltage lighting, in general, can be employed when running standard line voltage (or AC) lighting systems would be overkill. This is typically the case in LED lighting installations where the distance between the power supply and the light fixture is short enough that voltage drop won't be a problem. To explain further, low-voltage power doesn't travel efficiently along power cables because it encounters more resistance than high-voltage power. Resistance causes lines losses and voltage drop along cables (wasted energy). However, low-voltage lighting can be very efficient if power doesn't have to travel far, especially if it's DC power supplying a DC device.