1. Electrical equipment, devices, components, wires, cables and other electrical products used in temporary power utilization projects on the construction site must pass the national "3C" certification in accordance with relevant national and provincial regulations and be registered in the provincial construction industry products. ?
2, the construction unit must be in accordance with the relevant provisions of the electrician with labor protection supplies and electrical tools, and should be equipped with multimeter, megger, grounding resistance tester, leakage protector detector.
3. The neutral point of the power supply of the temporary power utilization project on the construction site is directly grounded to the 220/380V three-phase four-wire low-voltage power system, which must conform to the principles of TN-S zero protection, three-level distribution, two-level leakage protection and dynamic lighting separation, compressed distribution spacing and environmental safety. In each power system of the same transformer or generator, the type of grounding protection must be consistent.
4. Power distribution mode of temporary power utilization project on the construction site: the power distribution from the primary general distribution box (distribution cabinet) to the secondary distribution box can be diverted.
5. The power supply and distribution lines on the construction site shall be cables, and the model, number of cores, section and laying of the cables shall meet the requirements of the specifications. ?
Extended data
Technical specification for safety of temporary electricity consumption on construction site, all kinds of electricity users should:
First, master the basic knowledge of safe electricity use and the performance of the equipment used;
Second, before using the equipment, you must wear and equip the corresponding labor protection articles according to the regulations; And check whether the electrical devices and protection facilities are in good condition. It is forbidden to operate the equipment "with illness";
Three, stop using the equipment must switch power, lock the switch box;
Four, responsible for protecting the load line of the equipment used, protect the zero line and switch box. Find problems, report and solve them in time;
Five, relocation or mobile electrical equipment, must be cut off by an electrician and properly handle.
A safety technical file must be established for temporary electricity utilization on the construction site, and its contents should include:
A, temporary electricity construction organization design of all the information;
Second, modify the temporary electricity construction organization design data;
Third, technical disclosure information;
Four, temporary electricity engineering inspection and acceptance form;
Five, electrical equipment test, inspection certificate and debugging records;
Six, grounding resistance measurement records;
Seven, regular inspection (complex) look-up table;
Eight, electrician maintenance work record.
References:
Baidu Encyclopedia-Technical Specification for Safety of Temporary Electricity Use in Construction Site