Wire nuts may not be your favorite connector, but. They are available products UL listed for both stranded & solid wire. I have seen them used routinely on equipment that vibrates a lot more than a FRC robot ever will. You can tape them after they are made up if you are paranoid. The connection properly done will at last the life of the robot.
As in all things you need to use the right size for the number & size of wire.
Moved the thread.
These types of terminations are commonly know as ‘wire nuts’. Some have a spring inside and some have no metal inside. Like the WAGO terminals, there is a specific strip specification when using these connectors. If you strip too much, conductors are not insulated. If you strip too little, the wire nut falls off. While I have seen these used on robots, they are legal but not appropriate in many cases. I suggest that teams make as few splices as possible especially in high current conductors. Each splice a person introduces, also adds one more point of failure and higher resistance in the path. As noted most are designed to terminate both stranded and solid conductors. However, they are generally not recommended to mix conductors in the same termination. I would certainly question any splice on #6 wire using these connectors.
Does anybody use solid wire on a robot? :), By the time I get to #6 wire I am generally using lugs & not twist connectors. The Ideal twist connectors (wire nuts) are UL listed for solid and/or stranded wire. In building wiring it is probably the easiest way to make the transition.
I agree with Al that you want as few as splices as possible. Every one is a failure point. Whatever ever method you choose make sure it is done properly.
Oh yes… we do. In fact, this was the first year we didn’t.
It’s the result of having a sponsor (Ford) who donates some wire to us every year… but it’s primarily electrical panel wiring for Industrial panels. It’s a pain to work with, but when you’re living on a budget you learn not to complain
After the 2011 North Star regional, we threw some into our standard kit of parts, although they’re only used in emergency situations. At North Star that year, we started burning out FP motors during elims, after only one or two matches. We didn’t have the time to figure out or fix the mechanical reasons for this at the competition, so we just started swapping in new motors to keep the beast running. Needless to say, at that point having some wire nuts handy would have made swapping new motors in a lot quicker and easier! We managed to get the connections soldered each time, but it was always a serious time crunch to get the swap done in time. As Al said, you want as few splices as possible… but situations like this are ideal for making a quick splice instead of running the wire through the entire robot.
Used properly (and every container of these - bag or box - MUST contain proper usage instructions) wire nuts are as good as just about anything. And they’re available in sizes for almost anything you’d use on a robot. For big (>10 ga) or small (<20 ga) they are not optimal.
That being said, we don’t use them, since we try to avoid splices and wire nuts are not better than a proper solder connection. For connections that need to come apart, we use connectors.