Why does the voltage increase as I move down the fenceline?
The voltage on your fence is greater closer to the end due to what is called the "bounce effect." This means that the pulse the energizer has sent down the fence reached the end and is returning back up the fence. It then meets the next pulse coming from the energizer creating a voltage spike or "bounce." This really means that your energizer joule rating is more than adequate for your fence load and has a surplus of energy, which is exactly what you want in your system.
I have wondered the same thing. And now we both know...
I know your not the one making the claims. Not aimed at anyone, just a good discussion point.
An energiser does pulse, it basically builds up to a certain level and then releases.
The hotwire is insulated, or supposed to be if done right, it requires a return path to complete a circuit.
It is not possible to read more voltage than the energiser puts out at max unless the reader is not reliable, or being confused due too design. And it should drop over a long run just due to electrical properties. Well, that in fact, it does, even if your the best hotwire builder on earth. It is like gravity & applies too all.
For 6000 volts to get too the end of the wire, it must pass the whole length of that wire, so it is a reader failure, failure in design, or a problem....basically, changes should be due to a problem. But poor reader design would not surprise me at all. It may even give rise to new reasons for reader errors.
It is like saying I have 1000hp at the rear wheels, but if I measure at the first prop shaft joint I get 250hp, the third is 480hp...but 1000 gets to the rear wheels ok.
Or I have 1000psi at the end of my hose, but the middle is only 750....
Does not compute. They are trying to simplify something complex and leaving out the meat cause they think no one can grok it IMO.