Is the equipotential connection of the toilet in a high rise building partial or total?

It's all right. 1 Classification of equipotential bonding.

When the author was compiling 97SD567, he was right"Equipotential bonding"with"Equipotential bonding"Analyze and compare, and decide to adopt this atlas"Equipotential bonding"I would like to emphasize here that in order to correctly implement any standards and norms, there must be a name for the standard, see the specific analysis"**Preparation of the standard diagram of "Equipotential Bonding Installation"."(Collected Techniques for Electrical Design of Modern Buildings, p. 233.) In the general description, the equipotential bonding is divided into three levels, namely, total equipotential bonding, auxiliary equipotential bonding, and local equipotential bonding.

The total equipotential bonding acts on the whole building, and the equipotential bonding terminal board radially connects or links the metal pipes and metal structural components in and out of the building. Auxiliary equipotential bonding is between the conductive parts, with wires directly connected, so that their potentials are equal or close, generally when a part of the electrical device grounding fault protection can not meet the time requirements of the cutting circuit, auxiliary equipotential bonding.

Local equipotential bonding is to communicate each conductive closed part through the local equipotential bonding terminal board within the scope of a local place, generally in bathrooms, swimming pools, hospital operating rooms, agriculture and animal husbandry and other special dangerous places, the risk of electric shock accidents is greater, and lower contact electric car voltage is required, or in order to meet the requirements of anti-interference of information systems, general local equipotential bonding also has a terminal board or is connected into a ring. Simply put, local equipotential bonding can be seen as the total equipotential bonding within this local range. The difference can be understood by the figure on page 6 of the atlas.

2 Effectiveness of equipotential bonding.

In the test of the conductivity of equipotential bonding in the atlas, the resistance value requirement of 3 is proposed, mainly with reference to the German standard, the equipotential bonding is only an additional protective measure against indirect contact shock, and the resistance value requirement is mainly to put forward the quantitative standard for the conductivity of the equipotential, which is easy to implement in actual work. Therefore, before the electrical equipment is put into operation, the pipe clamp, terminal board, connection wire, relevant joint, and color mark on the entire path for equipotential should be inspected once to measure the resistance between the equipotential bonding terminal board and the end of the metal pipe within the range of equipotential bonding. Some people are worried that there is no better remedy when the resistance does not meet the requirements after measurement, in fact, the measured resistance value is mainly the contact resistance, if the connection is reliable or add some jumper wires, it should not be difficult to do 3 or less.

In the continuity test, the test power supply can be a DC or AC power supply with a no-load voltage of 4 24V, and the test current is not less than 0 2A, and it is best to use a test current of 5A, and the current is too small and the measurement value is not accurate. At present, there are special manufacturers in foreign and domestic countries to produce testers for testing equipotential bonding, which is more convenient for testing.

The bathroom should be made of local equipotential connection, what does He Chun mean pro! Hello, I am glad to answer for you<> local equipotential bonding in the bathroom is to connect the metal pipes and metal components in the bathroom through the equipotential bonding line at the equipotential connection terminal board, so that the potential in the bathroom is at the same potential, even if this potential is higher than the ground potential, there will be no potential difference in this range, so as to avoid electric shock accidents. When bathing, the human body is completely wet, the impedance of the human body is large N1-drop, and the small voltage conducted along the metal pipes and metal components can cause electric shock accidents.

This kind of electrical accident can not be installed leakage protector, isolation transformer and other protective electrical appliances to prevent, because this kind of voltage is conducted along the non-electric metal pipes, metal components, the only preventive measure is to make local equipotential bonding. After doing this, no matter the abnormal voltage from the **, due to the effect of equipotential bonding, the potential of all the conductive parts in the place will rise to the same potential level at the same time, and there will be no potential difference, and the electric shock accident will naturally not occur. Extended material: I hope mine can help you <>

Do you have any other questions?

Need. 1.The practice of local equipotential connection in public restrooms is to electrically connect the PE lines of the system, the metal bodies in the building structure, and all conductive parts outside the installation.

2.Toilet outlets should also be electrically isolated.

3.Bathroom electrical equipment should be considered waterproof, splash-proof, and moisture-proof.

4.Separate circuits should be used for power supply in the bathroom.

It's best to set it up, it's also safe.

The practice of equipotential bonding in the bathroom requires that the metal components that may be touched by hand: heating pipes, water pipes, sewer pipes, and foundation steel bars are connected together, and then connected to the terminal box of equipotential bonding.

Because there is moisture in the bathroom, it is recommended to place this box on a suspended ceiling or in a dry and easily accessible location.

If the bathroom is small, I recommend that there is no need for equipotential coupling. As long as the grounding of the electrical equipment (electric water heater) in the bathroom is good enough, it can be guaranteed that there will be no electric shock problem.

In fact, the equipotential bonding technology makes sense in theory, but the technology realized in practical engineering is not perfect. You can consider it appropriately in your own home.

No, you don't.

Equipotential grounding and electrical grounding are two different things and cannot be mixed.

Bathroom equipotential connection is to connect all the metal parts in your bathroom, including metal pipes and metal valves.

The working ground is the grounding wire on the socket in your home, which communicates with the grounding of the electrical appliance.

The practice of equipotential in the toilet is carried out as follows: 1. The specific practice of the potential grounding terminal box is determined as follows: the equipotential terminal box is made of cold-rolled steel plate, and the concealed application method is adopted.

2. The practice of equipotential bonding is as follows: 1When carrying out local equipotential bonding in the bathroom, the metal water supply and drainage pipe, metal bathtub, metal heating pipe and ground reinforcement mesh should be connected together at the local equipotential bonding terminal board through the equipotential bonding line, and when the wall is a concrete wall, the reinforcement mesh in the wall should also be connected with the equipotential bonding line; 2.

Isolated objects such as metal floor drains, handrails, towel racks, soap dispensers, etc., are not connected. When the water supply and drainage pipes and bathtubs are non-metallic materials, they are not connected. 3.

The local equipotential bonding terminal board should be bolted and set in a convenient position for detection, so that it can be disassembled for regular testing; 4.The equipotential bonding line adopts BVR-LX4 square millimeter wire to wear plastic pipes in the ground and the wall, and the equipotential terminal plate is connected with the steel mesh in the wall or in the ground with -25x4 flat steel. If there is no PE line in the bathroom, the local equipotential connection of the toilet shall not be connected to the PE line outside the bathroom; If there is a PE line in the bathroom, the local equipotential bond in the bathroom must be connected to the PE line.

5.The specific connection points are: the spare socket in the bathroom, the electric water heater socket, the PE line of the water heater socket and the bidet socket, the PE line of the mirror lamp, the reserved junction box of the metal bathtub, the metal ceiling skeleton and the embedded parts on the ground or wall connected with the steel mesh of the building on this floor are respectively connected with the local equipotential bonding terminal board ().

1.When carrying out local equipotential bonding in the bathroom, the metal water supply and drainage pipe, metal bathtub, metal heating pipe and ground reinforcement mesh should be connected together at the local equipotential bonding terminal board through the equipotential bonding line, and when the wall is a concrete wall, the reinforcement mesh in the wall should also be connected with the equipotential bonding line;

2.Isolated objects such as metal floor drains, handrails, towel racks, soap dispensers, etc., are not connected. When the water supply and drainage pipes and bathtubs are non-metallic materials, they are not connected.

3.The local equipotential bonding terminal board should be bolted and set in a convenient position for detection, so that it can be disassembled for regular testing;

The toilet is a humid place, which is a frequent area for electric shock accidents, and motor accidents caused by electric potentials conducted from the outside of the toilet can only be prevented by implementing local equipotentials. Combined with engineering practice, 17 kinds of understandings and construction misunderstandings in building construction were analyzed.

Problems that can occur.

1. The electrical appliances in the bathroom have been grounded through the PE wire and protected by leakage protectors, so the appliances do not need to be locally equipotential bonded.

2.On page 16 of "Equipotential Bonding Installation" (02D501-2), the wire uses BVR1*4mm wire to wear the pipe in the floor or wall, but the PE wire of the socket in the bathroom only uses BV-1*, which violates the provisions that the PE branch line shall not be larger than the trunk line.

3.The concrete itself is not electrically conductive, so there is no need to weld the reinforcement network inside.