Chaining is no problem, but I had some problems experimenting with looping at my own house. Apparently, the LED or driver/control module acts as a sort of resistor, and you lose voltage rapidly. If someone could explain this more scientifically I'd appreciate it. This is bizarre: on one circuit, using 14 gauge wire, I had looped (2) 4.5 watt LED's, and a 20w path. The LED's were fine, but the path was not even glowing, even with the meter reading 12v at the socket. Is the meter giving me misleading voltages because of the loop (i.e., one phase is 12v, the other much lower?) I replaced the bulb, checked connections, switched paths, etc., same problem.