I suffered for a long time until my neighbor showed how to connect single-core and stranded wires
Although I am not an electrician, if I need to connect a new socket or lamp in the house, I do it myself. And then one day I needed to plug in a socket in the hallway. For this, as usual, I bought a rigid (single-core) cable with a cross section of 2.5 mm.
And, in order to do everything quickly, I took a couple of Wagovsky terminals for five connectors.
I thought that I would cope with this task quickly, but after opening the junction box and removing the insulation from the wires, I found a dubious twist that I had never expected to see.
In it, soft (stranded) wires were connected with a single-core one. Apparently it was screwed up by the previous owners (my family and I have lived in this house not so long ago) and I had no idea that stranded wires could be present somewhere in the wiring.
As you can imagine, the terminals that I bought are not suitable for connecting such wires.
In this case, clamping terminals are used to connect stranded and solid wires of various cross-sections (with levers) or do crimping, which requires a special tool.What to do? I honestly had no idea how to reliably connect stranded and solid wires together without any terminals. It is very far to go to the store for other terminals (the nearest store is 20 km away), so it was necessary to come up with some temporary solution.
I tried to make a regular twist, but it turned out just awful and not reliable. Leaving everything like this was just dangerous.
After spending at least an hour, I never came up with anything, so decided to go to his neighbor for advice. He was an experienced electrician and helped me out more than once in difficult times.
Having told him about his problem, the neighbor grinned and said: "Why are you suffering, here you go." He held out his hand to me, which contained bolts, nuts and washers.
Everything turned out to be much easier than I thought. You can connect stranded and solid wires in this way. We wind the wire clockwise around the bolt and put on the washer. Then the next wire, the washer again, and so on.
Then we tighten the nut tightly and the connection is ready. In the end, it remains to isolate everything well and put it in a box. Such a connection of wires is very reliable and it can serve not only as a temporary one. (by the way, you can connect copper and aluminum wires in the same way). Thus, the neighbor once again helped me out, for which many thanks to him!