Asking on behalf of a user:
I have a question regarding the pink cable that is used to land on the chassis of a device. In an internal combustion device, I understand well that this cable is connected to the chassis because the negative cable of the 12-volt battery is also connected in that position. But what I still don't understand is whether said pink cable should be connected or not if the equipment is electrically powered, for example 48 volts, and whose negative is not connected to the chassis. In that case, does it make any sense to connect the pink cable to the chassis?