The maximum amount of current that a 35 square copper core wire can withstand

The theoretical value can be used up to 154A.

However, in actual use, the following aspects need to be considered.

1. Laying method, overhead or pipe or trunking.

2. The theoretical value in the table is generally used, that is, about 154*.

3. There is still a certain margin below the actual value.

Hello! It depends on whether you take the bright line or the dark line, the load is far and near, and the dark line can only be counted as the bright line, 10A below the national standard 1 square can withstand 10A, 40A below 1 square can withstand 8A

80A below the national standard 1 square can withstand 6A, 1 square below 100A can withstand 3A, 1 square above 100A can withstand 2A. If the current is too big, it will be boring, and the line loss will be too big! Line loss p = square of current multiplied by line resistance.

If 35 square is used on a 380V motor, it can bring 50kW, about 100A.

It only represents a personal opinion, don't spray if you don't like it, thank you.

According to the relationship between the cross-sectional area of the wire and cable and the current: the safe current carrying capacity of the 25 square millimeter copper power cord - 120A; If the copper wire current is greater than 120A, it will be taken as 5A per square millimeter.

35-25 = 10 square millimeters.

10 mm² 50a

120+50=170a

Therefore, the 35 square copper core wire can withstand a maximum current of 170A.

The 35 square cable can withstand about 150A current.

The maximum current that the wire can withstand, depends on:

1. The material of the wire, that is, its resistivity;

Second, the nuclear loss and heat dissipation of the wire itself is quietly changed, that is: the bare wire or the line wrapped with the insulating layer, whether it is a single-strand wrapped wire or a multi-strand wrapped wire (multi-core cable), the thickness and thermal conductivity of the insulation layer.

3. The heat dissipation of the working environment of the wire, that is, whether it is ventilated, or buried, buried, or piped.

Fourth, the temperature of the environment.

5. The heat resistance level of the wire insulation layer.

A: 35 square copper wire can withstand 210A current.

Analysis: You can directly find the practical hardware manual, the safe load current of each flat abutment leg Zheng Fang copper wire is 6A, and the total current that 35 flat hunger type can withstand is 35 6=210A.

Expansion: The rated current of the cable in the circuit is also related to the line frame (laying) mode, only Bo Song is the change in the rated current size generated by the different line frame (laying) methods, and the relative cable material, wire diameter and the size of the rated current change, the proportion is very small, and it is often ignored.

The 35 square cable can withstand a current of about 150A.

Generally, the current carrying capacity of the cable is multiplied by the voltage multiplied by the power factor, the cable is 180 meters long, the voltage drop can be simply estimated, the voltage difference is divided by = (power * resistance + reactive power * reactance) by the voltage, the power can be calculated according to 50kw, the resistance and impedance are calculated according to the cable parameters you choose, and the voltage is calculated according to the voltage difference, if the voltage difference is higher than 7%, it is not possible.

This is all a theoretical estimation method. Reactive power can be calculated according to the power factor or conversion.

Extended Information: Cable Safety Requirements:

1. When the cables cross each other, the high-voltage cable should be below the low-voltage cable. If one of the cables is protected by a pipe or separated by a partition within 1m before and after the crossing, the minimum allowable distance is.

2. When the cable and the thermal pipeline are close or crossed, if there are thermal insulation measures, the minimum distance between parallel and cross is and.

How many kWh of current can a 25 square cable carry?

Power and current are two generalizations, not "how many kilowatt-hours of current".

The interception current of 25 square cables is 102A (aluminum core), and if it is a three-phase motor, it can bring 48 kilowatts. Copper core 134a. It can carry 64 kilowatts. If it is an electric heating appliance or a symmetrical three-phase circuit power, the load that can be carried is greater.

The 35 square cable can withstand about 150A current.

The maximum current that the wire can withstand depends on the following

1. The material of the wire, that is, its resistivity;

Second, the heat dissipation conditions of the wire itself, that is: bare wire or wire wrapped with insulation, whether it is a single-strand wrapped wire or multi-strand wrapped wire (multi-core cable), the thickness and thermal conductivity of the insulation layer.

3. The heat dissipation of the working environment of the wire, that is, whether it is ventilated, or whether it is buried, buried in the wall, or whether it is worn through the pipe.

Fourth, the temperature of the environment.

Fifth, the heat resistance level of the wire to make the beam insulation layer.

Extended Information: Wire and cable manufacturing and the production of most electromechanical products.

It's completely different. Mechanical and electrical products are usually assembled into parts from another part, and multiple parts are then assembled into a single product, and the product is measured in units or pieces.

Wires and cables are measured in terms of length.

All wires and cables are made from conductor processing, and insulation, shielding, cable-forming, and sheath are added layer by layer to the periphery of the conductor to make wire and cable products. The more complex the product structure, the more layers there are.

According to the cross-sectional area of the wire and cable and the current of the stool clearance: the safe ampacity of 25 square millimeters copper power cord - 120A; If the copper wire current is greater than 120A, it will be taken according to 5A per square millimeter of each date.

35-25 = 10 square millimeters.

10 mm² 50a

120+50=170a

Therefore, the 35 square copper core wire can withstand a maximum current of 170A.