What to do if wires fall out of the light switch?

Ilga asks:
She put down a shelf in the corridor and touched on the switch that was holding on to the snot. Now the left key does not work, the light in the bathroom. Opened, hanging wire. I can not figure out the circuits, whether it was connected somewhere or how to return the light. Socket and the other two incl. work.
The answer to the question:
Most likely it was connected to the switch terminal. Usually, at least two wires should be connected to the switch, if it is a single-key, and if it is a two-key, then three wires. If 1 wire hangs, then maybe it just fell out of the terminal block, it happens when the screw tightening is loosened, and if the terminal blocks are not with screws, but with self-clamping terminals, then it may be necessary to change the switch if the terminal has crumbled. I recommend reading about connecting a light switch for general development this article. Well, so that you do not damage anything in the wiring or yourself, I advise you to either call an electrician or send us photos of what happened, the hanging wire and so that the reverse side of the switch is visible.
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