In the earlier discussion it became apparent that there were different approaches to when the breakaway switch should trigger, but I think clearly it must trigger before the electrical cable comes out, if the electrical cable comes out while the chains are still intact. Whether it triggers within the reach of the chains or only after the chains fail is the topic of debate.
Originally Posted by cpaharley2008
I got the shortest set up which is 48". Maybe the switch needs to be moved back?
I'm surprised it's that short: it looks like about two feet as installed, and it looks like it can go more than twice that length, but that's only a rough visual guess. In any case, if the trailer is unhitched but left with the chains connected, and pulled back from the tug, does the breakaway cable length stretch to more than four feet? If not, the switch won't be pulled.
I would hesitate to move the switch, because you would then risk the cable getting snagged in all the other hardware (especially with the Anderson No-Sway chains) and not pulling out of the switch.
Fastway's cable installation instructions
say nothing about length. The instructions for installation complete with switch
refer to placing the switch, and still say nothing about cable length or arranging when it is triggered. They may assume that it is only for when the trailer becomes completely separated, including failure of the chains.
The Zip cable comes in only two lengths (4' and 6'), but it could be made shorter. My guess is that most people will likely not want to deal with crimping or clamping fittings on the cable to do that.