1) The protective performance of the power distribution device shall adapt to the environmental characteristics [9].(2) The power supply and lighting power supply in the workshop shall be separated [9].(3) The distribution device shall have certain reserve capacity and circuit [9].(4) The protection of the distribution devices shall be coordinated to ensure reliability and selectivity [9].(5) The start-up and control equipment in the workshop can be centralized or decentralized according to the situation. When the process equipment allows, it is better to use the direct start mode