Mixing station distribution box should be labeled Multiple Distribution

Stationary conacrete plant shall prepare construction design temporary power to determine the power line, the total distribution box, distribution box location and orientation of the line for load calculation, select transformer capacity and wire cross-section, the development of safe use of electricity Technical measures and electrical fire prevention measures. By the relevant departments of audit and technical director for approval and implementation.  distribution room (chamber), transformers and other electrical equipment located fixed barriers or safety mesh fence, height of not less than 2.5m, should set clear prohibition, warning signs, signs of the production and installation should follow the "Railway safe and civilized construction project site sign "- Iron ban 5, Tiejing 1 and 16 requirements.  should be consistent with the existing temporary power "construction site temporary electrical safety technical specifications" (JGJ46) requirements. Project dedicated power neutral point directly grounded 220/380V low voltage electrical systems must be used to protect access to zero TN-S system, and to do three power distribution protection and two "one machine, one box a gate-drain."  Power operating personnel must be certified, according to the provisions worn properly, the use of labor protection products.  multi-channel distribution distribution box should be marked, batch mixing plant should gates, locks, a water-resistant measures, steel switch box must be grounded. All electrical equipment must be complete, no damage, good performance.