Originally Posted by gulf
Why do you dislike push on connectors? As long as the insertion force is many many times higher than the weight of the end of wire it wont ever come out unless pulled by someone.
I have seen to many of them fail in the marine environment
. Had one two months ago. Seemed to push together fine but then would not pass current
unless you physically pressed on it or wiggled it. Took my pliers and compressed the nylon jacket over the female end, making it tighter, and it worked. It was zip tied within 2" on either side but I suspect the vibrations still worked it over time and the female side lost
its grip. Replaced it with a butt connector.
Once had a customer use a search light on their 12V plug
. On the back of that plug
was a female bullet connector that slid over the hot post which was a threaded bolt not a proper male type bullet with more contact surface area. The high current
caused enough resistance to melt the wire and burn the insulation
off the jacket which also melted through three other wires. Replaced the bullet connector with a ring terminal and nut and he never had the issue again.
It's not that I won't ever use them but I won't use them in a critical application. Every now and then they are the best tool for the job and literally can't be avoided but I find those times pretty rare. You can somewhat seal them by filling them with terminal grease but then this reduces the pull out force required as you essentially lube the friction fit. Also I have tested a number of brands that just don't meet the ABYC pull out specs, even when new.
If you do use these I would urge you to use the fully insulated type where the nylon insulation fully encases the male and female parts
. I have seen a number of these short out on other items when they are not of the fully insulated type. Happened in a race
one night when one came apart and shorted across the battery
switch terminal. It literally welded to the stud then proceeded to turn the multi-stranded wire into a solid conductor. If this had been the fully insulated type it never would have shorted out. Fortunately we flipped off the batt switch within a few seconds but the stench of melted wire and smoke still filled the cabin
and the damage was already done.
If you can avoid using this type do it:
If you must use them use fully insulated friction connectors (this crimp connector was crimped using the wrong tool by a "qualified" marine refrigeration
guy and it literally fell off the wire):