How to multiply two electrical wires?

Thank You for your response.

I have tried as you mentioned, but it is creating problem at 3 Ph voltage measurement.
The above picture is used with wire multiplier. I have used width 2. Below is the error message.

Width of component terminal (1) does not match width of connection (2). The connection width is fixed by component xxxxxxxxxx. Check the parameters and connections of these components to correct the error.