How to configure the secondary distribution box on the construction site (what is the configuration of the secondary distribution box on the construction site? )

1, how to configure the secondary distribution box in the construction site.

2. What is the configuration of the secondary distribution box on the construction site? .

3, site secondary distribution box requirements.

4, the construction site secondary distribution box standard configuration diagram.

1. The secondary distribution box on the construction site is generally located between the tower crane and the mixer, one in the steel bar production area and the other in the concrete pumping station.

2. The distribution box and switch box shall be made of cold-rolled steel plates with a thickness of 2 to 0 mm, in which the thickness of switch box shall not be less than 2 mm, and the thickness of distribution box shall not be less than 5 mm.. The door of the box should be provided with reinforcing ribs, and the surface of the box should be treated with anti-corrosion.

3. The vertical distance between the center of fixed distribution box and switch box and the ground shall be 4-6m.

4. The mobile distribution box and switch box should be installed on a solid and stable bracket.

5. The vertical distance between the center point and the ground should be 0.8 to 6 meters.

6. The electrical appliances in the distribution box and switch box should be fixed on the metal electrical installation board first, and must not be skewed or loose, and then they can be fixed in the distribution box and switch box as a whole.

7. General distribution box can also be installed with electric beam.

8. Metal electrical mounting plate and metal box should be electrically connected.

9. The electrical appliances in the main distribution box should have the functions of power isolation, normal connection and disconnection, short circuit, overload and leakage protection.