The surface area will be big enough initially, but as was mentioned somewhere upthread, solder flows, and the joint will loosen. Thou shalt not solder wire destined for clamp-type terminals. There's no upside to tinning - I have made hundreds of Speakon/Powercon/NEMA/whatever connections with stranded wire, and after about the first 3 plugs, got the hang of it with very few straggling strands.
Thanks everyone for correcting my bad habits. I'll have to go back and check my power cabling.On a similar note, is it also a bad idea for speakons?
Would I pull apart speakons and re-terminate them because the ends were tinned? Gosh no. All my commercially made speakon cables have tinned ends. They don't seem to loosen up.
Give them time, they will. Trust me, I'm a doctor... of something...
And they loosen up easily over time. There's a difference in the mechanics of the connection when the little metal tab gets pushed against the wire strands, when its a matrix of solder/copper, it's much stiffer and doesn't create the same sort of physical conditions in the joint.
I understand that clamped tinned wires are not best practice, and are prohibited in some environments. I'm not sure they are actually banned in AS3000 here or the NEC in the states though.From my reading, solder shows a 0.01% creep rate per day under 2.3MPa pressure. That seems significant, but won't creep cause the joint pressure to drop and thus the creep rate to drop?Clamped tinned wires are very common.
Once you loose pressure/tension in a threaded joint you have failure. Once the solder and copper have moved away from the terminal they start to arc, and go intermittent. Imagine that happening to a Macro-tech 5002vz driving a 2.67ohm load at full tilt... That's basically an arc welder.
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