Method for preventing high-current conductor from crossing roof to generate circulating current

The invention relates to the technical field of electrical construction, and discloses a method for preventing a high-current conductor from crossing a roof to generate circulating current, which comprises the following steps of: S1, positioning: determining the position of a split-phase bus crossing the roof according to design; s2, trimming: shearing steel bars between phases of the three split-phase buses to form gaps; and S3, connection is conducted, specifically, discontinuous connection is conducted through connecting pieces made of non-magnetic materials, so that the positions penetrating through the roof are located in the same steel bar loop. During wall penetrating, the three phase-splitting buses of the three-phase electricity penetrate through the same steel bar loop, and due to the fact that when the three phase-splitting buses of the three-phase electricity are located in the same closed loop, the magnetic flux in the loop is zero, the heat effect of the loop caused by electromagnetic induction