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Registered Member #1819
Joined: Thu Nov 20 2008, 04:05PM
Location:
Posts: 137
This is my dumbest question yet.
Two days ago, I got a few crimp terminals to attach wires to the trigger terminal of my INT-A-PAK SCR. I crimped them to some wire, and it worked until the next day. One of the terminal's wires simply fell out, and the other just came out when I lifted the wire.
I used 16AWG stranded wire, and the crimp terminals were blue, meaning that they could accept 16-18AWG wire. I'm pretty sure I crimped them correctly (I inserted the strands into the terminal, then squeezed the crimp in the center with a crimping tool). Is there anything I'm doing wrong? Do you have any suggestions?
Registered Member #56
Joined: Thu Feb 09 2006, 05:02AM
Location: Southern Califorina, USA
Posts: 2445
To get a good crimp with an insulated terminal you need a special tool (not the $5 one that looks like a pair of pliers) that has dies in it that can fold the prongs of the terminal in so that they are essentially spring loaded down on the wire.
Or just solder them. You don't even need to remove the plastic, just hold the terminal end with a helping hand, and solder from the opening, the solder will wick in and give a very good joint. the plastic will soften, but as long as you don't get it too hot it will look just fine afterward :)
Registered Member #89
Joined: Thu Feb 09 2006, 02:40PM
Location: Zadar, Croatia
Posts: 3145
killah573 wrote ...
This is my dumbest question yet.
Two days ago, I got a few crimp terminals to attach wires to the trigger terminal of my INT-A-PAK SCR. I crimped them to some wire, and it worked until the next day. One of the terminal's wires simply fell out, and the other just came out when I lifted the wire.
I used 16AWG stranded wire, and the crimp terminals were blue, meaning that they could accept 16-18AWG wire. I'm pretty sure I crimped them correctly (I inserted the strands into the terminal, then squeezed the crimp in the center with a crimping tool). Is there anything I'm doing wrong? Do you have any suggestions?
Any advice would be greatly appreciated.
Those colored terminals aren't suitable for crimping, they should be soldered.
These are the only crimp terminals that I trust, and they require a dedicated tool for proper crimping.
Registered Member #1837
Joined: Tue Dec 02 2008, 02:20PM
Location: NYC
Posts: 65
I am an elevator constructor and I can say with certainty that a reliable connection can be made with the proper tool. You need these:
I use them on a daily basis (even with the cheap sta-kon's or butt splices that my boss gives us). I've never had a problem once and i've used thousands and thousands of these things. The tool will cost you 30 bucks or so but is a huge time saver when making many connections. I use mine on red, blue and even yellow connectors.
Registered Member #1497
Joined: Thu May 22 2008, 05:24AM
Location: Toronto, Ontario, Canada
Posts: 801
Just to chip in, I've crimped them with the 'crappy' version of a crimper with decent success, but probably because I exert a ridiculous amount of force on the crimper, and crimp in 3 spots (middle, and both ends). Again, its always good to tug on it to make sure its secure, if it slips off, just use another and solder (maybe its the wire type that is incompatible).
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Crimp Terminals Failing
