Electrical industry or property pre-branch cable drawings?

Electric power company. According to the inquiry of State Grid, in the process of building power design and construction, the installation and use of pre-branch cables need to conform to the relevant building electrical design and construction specifications, and also need to be recognized and guided by the local power department. The pre-branch cable drawings need to be submitted to the local power department for approval, so the pre-branch cable drawings are in the power industry.