The low-voltage complete distribution cabinet, control cabinet (panel, table) and power and lighting distribution box (panel) shall be provided with reliable electric shock protection. The protective conductor in the cabinet (panel, platform, box, panel) shall have exposed terminals connected with the external protective conductor. When there is no design requirement, the minimum sectional area Sp of the protective conductor in the cabinet (panel, platform, box, panel) shall not be less than that specified in the attached table.