Originally Posted by JoeyD
Pete the chain reaction can and does happen when hooked up to taps 15v and below. Its all relative. If you are putting 12v on a run using a higher voltage tap you are going to increase the 12v no matter if its the 14 or 16v tap feeding it. This is just part of LV lighting. This is not a strong argument, do I have to break out the test equipment again?
It doesn't take an electrical engineer.
The voltage drop from lamp load is greater than the loss of voltage due to resistance in cable
So if you are far out and get a burn out I'd rather be on a 15V tap than higher. The higher the tap in this instance the higher the voltage and the sooner the lamp will die.