What is the specific form of equipotential bonding Where does the building need equipotential bondin

First of all, it is necessary to understand what equipotential is, and equipotential is equipotential. If two test points are selected in a live line and there is no voltage between them, that is, there is no potential difference, then we assume that the two test points are equal potential, and there is no resistance between them.

Therefore, the equipotential link form is connected by a connectable conductor (wire and cable building metal frame).

Due to the large number of electronic equipment, control systems, and other electrical equipment and instrumentation equipment of the building, it is necessary to carry out equipotential connection to ensure that the potential of the equipment is the same, and to prevent equipment damage or transmission problems caused by potential difference.

Answer]: a, b

This question examines the technical requirements of building lightning protection and grounding leakage. The exposed conductive part of the equipotential bond or the external conductive part of the orange quiet connection should be reliable. 1) When welding is used, it should comply with the regulation of the length of the welding lap.

2) When bolted connection, the bolts, washers, nuts, etc. should be hot-dip galvanized products, and should be firmly connected.

The connection of the building and other electrical defects refers to the connection of all metal objects in and near the building, such as steel bars in concrete, water pipes, gas pipes and other metal pipes, machine base metal objects and other large buried metal objects, cable metal shielding, the zero line of the power system, and the grounding wire of the building by electrical connection, so that the whole building becomes a good equipotential body.

What is the difference between a structure and a building?

1. The concepts of the two are completely different. A structure is a building that cannot be provided for people to live, work, study and live, but if it can be provided, it is a building, which is divided according to people's social activities.

2. The classification is different. Structures include bridges, dams, cement, fences, etc., and buildings include agricultural buildings, civil buildings, industrial buildings, etc.

3. The space is different, the structure is not able to provide the internal space for people to use, and people cannot produce or live and carry out activities inside the house. However, the building has walls, doors and windows, and roof beams, which provide shelter for people from the wind and rain, and are used as a space for people to work, live and study.

4. The most important thing is to see if it can be provided for people to work and live, and if so, then it is architecture. But if it's not, it's a structure.

What should I pay attention to when building a house?

1. Foundation. Moisture-proof practice: The concrete structure itself can play a moisture-proof role, so there is no need to do moisture-proof treatment.

For brick structure, a continuous moisture-proof layer should be set at the foot of the inner wall and the outer wall of the ground floor of the building to isolate the capillary penetration of groundwater and avoid moisture damage to the wall. When there is a height difference between the ground on both sides of the inner wall, a vertical moisture barrier should also be added between the two horizontal moisture barrier layers in the wall.

2. a wall. It is a load-bearing and maintenance structure that belongs to the house. There are holes left by the external scaffolding tie on the exterior wall, and the holes must be plugged with bricks and other bricks before painting, and then painted with cement mortar, otherwise the part is very easy to seepage.

The walls are exquisite"Horizontal and vertical", the vertical ash seam must be vertically aligned, otherwise it will form a "wandering seam". The mortar of the masonry mortar should be full, and the head joints should also be full, and there should be no transparent holes.

3. Structural columns and frame columns.

Structural columns can strengthen the integrity of the house and enhance its earthquake resistance. The frame column is the main vertical support structure that bears the load from the beam and slab in the frame structure and transmits the load to the foundation. The difference between the two is:

The frame column and the structure are poured together, and the structural column is pounded by the secondary pouring branch ridge after the wall is masonry.

4. Simply supported beams and frame beams.

The longitudinally stressed steel bar of the simply supported beam is placed at the lower part of the beam, and the longitudinally stressed steel bar of the frame beam is placed at the upper part of the beam at the support position, and the lower part of the beam is placed at the middle part of the span. During on-site construction, it is necessary to pay attention to the placement of longitudinal stressed steel bars to prevent materials from being used in the wrong place, resulting in potential safety hazards or waste.

It's not the same. Equipotential bonding is the main measure to prevent electric shock, electrical fire and electromagnetic interference of electronic equipment. The metal shells, metal pipes, cable brackets, metal trunking, cable metal sheaths, steel mesh and other metal bodies of various equipment of the building are reliably connected with the common grounding device nearby.

The function of equipotential is to electrically connect the conductive part with a metal conductor to make its potential equal or close, and its function is to transfer potential.

The purpose of the slip is to reduce the ground voltage or contact voltage when the exposed conductive part of the electrical device is faulty, and the fault current is returned to the power supply through the PE line.

Although both are a kind of protective measures, the difference is that the equipotential letter does not have to be grounded, that is to say, the potential of the grounding point is zero potential when the leakage event occurs, and the voltage difference between the leakage and the conductive part after the equipotential connection is zero, and the potential is not necessarily zero.

1. Equipotential grounding is to keep the grounding parts at zero potential of the earth, and the electric power of the center point in front of the forced transformer mold is zero, and all the components that have done equipotential grounding have their potentials all the earth potential. The protective grounding is to ensure that the power supply system will not endanger personal safety when the fault of the beam.

2. Equipotential connection is to connect all the metal objects in the part, such as the bathroom, which may cause electric shock, but not necessarily all of them are grounded, but only connect the metal objects together to cause a local equipotential, because the electric shock is caused by the potential difference, the potential difference is eliminated, and the potential of all items is equal, so the person will not be electrocuted.

3. Lightning protection and grounding, refers to the use of the house to communicate with the earth, when there is a lightning strike, the electricity will be directly introduced into the ground, will not cause damage to the house.