Weilai charging pile is looking for unit line outside.

You can't. Weilai charging pile can't be pulled by other units. When installing the charging pile, you can't arrange the cable yourself, and you can't let the property electrician pull the cable. You have to arrange the cable through the construction personnel of the power supply bureau. Electricians in any unit except the construction personnel of the power supply bureau are absolutely not allowed to pull cables for charging piles.