Why does the passage switch not work correctly?
Hello. Help me please. The father-in-law is a self-taught electrician. Does basically everything. What can’t, we look on the Internet and everything turns out. Here it was necessary to carry through switches. We found the schemes on the Internet, read, figured out and connected. When checking revealed a problem. If you turn on the light from the first switch, turn it off from the second, then turn on again from the first does not work. Is that how it should be? The switches must be independent. Checked the connection, everything is correct, according to the scheme. What could be the problem?
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Hello! Maybe one of the switches is defective, maybe the wire between them is damaged. Which of the schemes do you use? If this is the case, you need to ring both switches and check whether the phase comes along each of the wires in both positions of the switch.
CHECK and connect according to the diagram. the middle conductor is confused with the extreme