Is the property signed first or the power supply bureau changed to three-phase power supply?

To change to three-phase electricity means to sign the property first and then go to the power supply bureau.

The installation of three-phase substation community must be approved by the property first, and it can't be installed under normal circumstances.

According to the regulations, houses are not allowed to move into three-phase electricity, and there are great security risks in changing three-phase electricity.

It is suggested that you can rent a studio outside if you need advanced experiments.