Electricity needs you to have a certain foundation to move. Let me tell you something! What we usually see on outdoor low-voltage poles is three-phase four-wire transmission mode, that is to say, the voltage between any two live wires is 380V, and the voltage between any live wire and zero wire is 220V V. Our household electricity is monophasic (220 V), which means we only use one of the three phases. If the other two items have electricity, you can disconnect the incoming line of this phase and take any one of the other two phases. But these operations are very dangerous. Don't operate unless you are an electrician. Check that there is electricity in a wire, just look at it with a test pen, or use a multimeter but turn to the voltage range to check.
I don't know if this answer is what you want to ask.