When the construction of the project is under construction, electricity must be used. Every construction floor does not have ready-made electrical equipment. How do they do it? Their team is responsible for pulling, installing and distributing electricity. People of equipment, one of the important points to pay attention to here is to ensure the safety of electricity. The site distribution box will be used, and it will be divided into special grades. Let’s take a look at how the distribution box level of the site is differentiated. . First, how to distinguish the level of the distribution box of the construction site 1, the first distribution box a, refers to the total distribution box. It is generally located at the concentration point of all power supply at the control site of the power distribution room, and is set close to the power supply area. The power supply is connected by the cable drawn from the low voltage side of the electric transformer on the construction site, and is equipped with a current transformer, an active energy meter, a reactive energy meter, an ammeter, a voltmeter, a main switch, and a sub-switch. b. The switch in the main distribution box should adopt the knife fuse switch (or leakage protection switch). The lead-in and lead-out wires should be piped and have a waterproof bend. The construction electricity first-class distribution cabinet is used for construction site construction electricity, which is specially designed for the construction site of the project, and meets the construction department's relevant construction electricity standard. 2, secondary distribution box It is the distribution of electric boxes, also called sub-boxes, generally responsible for a power supply area. Applicable to the construction site construction electricity, is specifically designed for the construction site site is relatively special, in line with the construction department's relevant construction electricity standards. The complete set of products can form a complete three-level protection system for construction and electricity, and achieve the purpose of one machine, one gate and one protection. The secondary box is designed with internal and external doors, and the exterior is sprayed with plastic. It is safe and beautiful, and the top of the rainproof box is suitable for field work. Second, the construction site distribution box installation guidance 1. The installation of the basic steel should be undertaken by the installation and construction unit. If it is undertaken by the civil engineering unit, the intermediate connection should be made before the equipment is installed. The steel profile is pre-aligned, rust-removed, and the anti-rust primer is brushed. 2. The basic steel frame can be prefabricated or assembled on site. The prefabricated basic steel frame or section steel is welded to the foundation pre-embedded iron according to the position marked on the construction drawing. Level and correct with the level gauge and level. Where gaskets are required, they shall be in accordance with the requirements for steel construction specifications. No more than three pieces of gasket, cleaned after welding, polished, and brushed with anti-rust paint. 3. The distribution box can be fixed by iron frame fixing or copper metal expansion bolts. Iron frame processing should be done according to the size, find the angle straightness of the angle steel, make the buried end into a dovetail shape, then remove the rust and brush the anti-rust paint. Pay attention to the straightness of the iron frame and the distance between the screw holes when burying. Use the wire drop and level gauge to measure the iron frame and the high-strength grade cement mortar. After the cement mortar is solidified, it can reach a certain strength before the installation of the distribution box (disk). 4. The basic steel dimensions are designed according to the design requirements, and the installation tolerances are shown in the table. 5. The basic steel is connected with the grounding busbar, and the grounded flat steel is introduced and welded to both ends of the basic steel. The length of the weld is twice the width of the grounded flat steel. If you don't understand the electricity, after reading these, you can't do it yourself. The electricity is very dangerous. It is best to ask a professional person to complete the operation. However, I believe that how to distinguish the distribution box level of the construction site is no longer a problem. We will certainly be able to use this knowledge better. For more exciting home improvement information, please continue to pay attention to the decoration home network. More related wonderful reading: Distribution box busbar installation method, distribution box purchase common sense introduction Distribution box wiring specification, precautions for use of distribution box What are the distribution box sizes? Distribution box installation steps What is a stainless steel distribution box? How to connect the stainless steel distribution box? Household distribution box specification model analysis household distribution box installation requirements Iron Fence Gate,Wrought Iron Gates,Iron Gate,Forged Iron Gates MINGYI METAL CRAFTS CO.,LIMITED , https://www.mingyi-ironware.com
