Insert bare stranded wire, tighten screw.
I really dislike these types of connections. In my experience the set screw needs to be retightened often, the copper gets all oxidized, the screws can loosen up and the wires fall out. Yesterda...
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I have found, that with stranded wire, you tighten as tight as you can, then wait a few minutes and re-tighten. You will be surprised how much the 2nd torquing will yield. The stranded wire has time to collapse and then the 2nd try completes the job and they do not come loose. Using Locktite is NOT a good idea. With Locktite you will have the set screw glued at the set spot, then when the wires collapse, the screw will then be loose, since you will have to tighten it again. It is NOT the screw coming loose(backing off), it is the wire strands collapsing that causes the looseness. Doug
