How to calculate the amount of wire and cable materials using formulas

1. Conductor dosage: (kg km)=d 2 * g * n * k1 * k2 * c d = copper wire diameter g = copper specific gravity n = number of k1=

Copper wire skein rate k2 = core wire skein rate c = number of insulating cores.

2. Insulation amount: (kg km) = (d 2 - d 2) * g * c * k2 d = insulation outer diameter d = conductor outer diameter g = insulation specific gravity k2 = core stranding rate c = number of insulating cores.

3. Amount of outer coating: (kg km) = ( d1 2 - d 2 ) g d1 = completed outer diameter d = outer diameter of the upper process g = insulation specific gravity.

4. Dosage of tape: (kg km) = d 2 * t * g * z d = outer diameter of the upper process t = thickness of the tape g = specific gravity of the tape z=

Overlap rate (1 4lap = .)

5. Winding amount: (kg km) = d 2 * g * n * z d = copper wire diameter n = number of pieces g = specific gravity z = twisting rate.

6. Weaving dosage: (kg km) = d 2 * t * n * g cos = atan( 2 * d + d * 2))).

Mesh t d=braided copper wire diameter t=number of spindles n=number of spindles g=specific gravity of copper: copper; Silver; Aluminium.

Zinc; Nickel; Tin; Steel; Lead; Aluminum foil Myla; Paper; Mylar ;; PEF (foaming);; teflon（fep）；；cotton belts; pp rope; Cotton yarn (all false specific gravity).

The resistance and the required current and voltage can be solved in junior high school physics.

The cross-sectional area of the copper wire of the wire and cable is multiplied by the number of cores and length of the wire and multiplied by the specific gravity of the copper.

Steps for calculating electrical wire and cable quantities:

1. Calculate the wires from the distribution box to the electrical equipment according to the floor plan;

2. Calculate the cable engineering quantity from each distribution box to the substation according to the plan;

3. The underground part and the aboveground part can be summarized separately.

Cables are generally made up of several wires or groups of wires twisted together, and there is insulation between each wire or group of wires. Its weight is calculated as follows:

Cable weight calculation YJV3*95+1*50 cable.

It is known how many square millimeters the cross-section of the cable is, let's say three of 12. Then, the weight of copper = 12*1000*x*3

where x is the weight per cubic millimeter of copper.

The structure is 3 x 95 mm² + 1 x 50 mm².

The weight of copper is simply calculated, and the total cross-section is km long.

Total cross-section of copper core: 3 95 + 1 50 = 335 square millimeters.

100 meters weight: 335 Calculation formula for wire and cable material consumption:

The weight of copper is customarily calculated without conversion: cross-sectional area*

For example, 120 square millimeters are calculated: 120*

1.Conductor dosage: (kg km) = d 2 * g * n * k1 * k2 * c

d=copper wire diameter g=copper specific gravity n=number of wires k1=copper wire skein rate k2=core wire skein rate c=number of insulating cores.

2.Insulation amount: (kg km) = (d 2 - d 2) * g * c * k2

d=insulation outer diameter d=conductor outer diameter g=insulation specific gravity k2=core screwing rate c=number of insulating cores.

3.Covert dosage: (kg km) = d1 2 - d 2 ) g

d1 = completed outer diameter d = upper process outer diameter g = specific gravity of insulation.

4.Packing dosage: (kg km) = d 2 * t * g * z

d=outer diameter of the upper process t=tape thickness g=tape specific gravity z=overlap rate (1 4lap =

5.Winding amount: (kg km) = d 2 * g * n * z

d=copper wire diameter n=number of wires g=specific gravity z=screwing rate.

6.Weaving amount: (kg km) = d 2 * t * n * g cos

Atan( 2 * d + d * 2 )) mesh number t

Quantity calculation for manufacturing cables or cable laying?

I don't know how to make cables!

The length of cable laying is calculated according to a single (there are construction drawings calculated according to the drawings, including horizontal sections, vertical sections, and uphill and downhill sections).

Calculation of cable laying length and specification of additional length.

Cable laying slack, waveform bending, crossing: full.

Electricity bills into the building:

When the cable enters the trench or hanger, it is reserved for the upper (lower).

Incoming and outgoing lines of substations.

Power cable terminations.

High-voltage switchgear and low-voltage switchboard, box.

The purchase of building materials requires a certain amount of expertise, otherwise it is difficult to control the quantity of building materials. For example, wires are one of the most difficult building materials to buy. When carrying out the transformation, it involves the laying of a lot of wires.

The amount of wires used is related to the division of functional areas in the home. Do you know how to calculate the amount of wire? Below I will introduce the calculation of wire usage for netizens.

First of all, let's understand some common sense of electricity, and then let's talk about: 1. The use object of common wire types: lighting.

Generally squared; sockets are squared; High-power electrical appliances (air conditioners, electric water heaters, small kitchen treasures, integrated stoves, range hoods, etc.) use 4 square wires. High-power appliances also generally use three-pin sockets (not the kind of three-hole below the five-hole, but a separate three-hole).

Second, the basic knowledge of the circuit: the voltage can be consistent when it is connected in parallel, that is to say, each lamp or socket must be drawn out of the main switch. Third, the socket generally needs three wires, and the lighting needs two wires. The above three points are the basis for calculating the amount of wires.

Next, let's officially talk about how to calculate the amount of wire:

**Contents: nano anti-oil plate "300 * 300" 12 square + imported LED 300x300 flat panel lighting 1 set + main bathroom (1 lighting lamp + 1 exhaust + 2 single lamp bath bombs) + guest bathroom (DHZ600-20 lighting + ventilation + lamp heating integration) 1 set + nano edge line 27 meters + anti-rust galvanized light steel keel + auxiliary materials +.

In addition, it is necessary to arrange or reserve a place for various electrical appliances to be placed, and arrange electrical outlets in appropriate locations. The overall plan should fully consider the rules of kitchen work, so that the "chef" has a comfortable and convenient working environment.

Pay attention to the use of wires that are not common for household appliances. Now water purification equipment has been popularized in many places, whether you want it or not, it is best to reserve the socket of the water purifier and water dispenser. There is also waste disposal, sound and so on.

Abandonment of network cables. Although the network cable itself is not expensive, the interface and panel add up to a lot of money. Nowadays, the vast majority of households are using WiFi, and fiber optics are used in many places. Therefore, the network cable can basically not be considered.

Based on the above, the required amount of each type of wire is calculated separately. Add another 5-10 meters to each type of wire, which is the amount you need to buy.

The above is the introduction I have prepared for you about the calculation of wire usage, I hope it can be helpful to you. If you have more questions about or other kinds, we are happy to welcome you to visit Tugou.com for a more detailed understanding.

The formula for calculating the cross-sectional area of wires and cables: the square of the radius of the wire (mm) and the number of strands.

For example, 32 strands (each strand of wire radius in mm) squared wire: 32 = squared.

A cable is an electrical energy or signal transmission device, usually consisting of several wires or groups of wires.

The derivative of electric wheel round wire cable The new product is mainly due to the application occasions, different application requirements and the convenience of equipment and the requirements of reducing equipment costs, etc., and the use of new materials, special materials, or change the product structure, or improve the process requirements, or combine different varieties of products.

Different materials are used, such as: flame retardant cable, low-smoke halogen-free low-smoke Mengtong lack low-halogen cable, termite-proof, anti-rat cable, oil-resistant, cold-resistant, temperature-resistant cable, etc.

Sheath thickness (perimeter after sheath extrusion - perimeter before sheath extrusion) 2 or sheath thickness (perimeter after sheath extrusion - perimeter before sheath extrusion) 3Thinnest point of insulation thickness: 90% nominal 4

Thinnest point of single-core sheath: 85% nominal 5The thinnest point of the multi-core sheath:

Nominal value 80% 6Steel wire armor: number = {outer diameter of inner sheath + diameter of steel wire)} diameter of steel wire ) weight = diameter of steel wire l number of roots x0d x0a 7

The weight of the insulation and sheath = outer diameter before extrusion + thickness) thickness l x0d x0a 8The weight of the steel strip = { outer diameter before wrapping + 2 thickness - 1) 2 thickness l} (1+k) 9Weight of the tape = { Outer diameter before wrapping + Number of layers Thickness) Number of layers Thickness l} (1 k) Where:

k is the overlap rate or gap rate, if it is overlapping, it is 1-k; If it is a gap, it is 1+k for the specific gravity of the material; l is the length of the cable; Stringing factor.

The formula for calculating the weight of a cable is: cable weight, conductor weight, insulation weight.

Cables are an important tool necessary for power transmission and communication, and their quality is also very important. Therefore, when making and installing cables, it is necessary to have an accurate calculation of their quality. The formula for calculating the weight of the cable is:

Cable weight, conductor weight, insulation weight. The conductor weight refers to the metal conductor inside the cable, and the insulation weight refers to the quality of the insulating material.

In the manufacture of cables, the conductor weight and insulation weight are usually calculated by the designer according to the working conditions of the cable. The designer will calculate the cable based on the size, material selection, rated voltage, load current and other indicators.

Of course, there may be other factors that need to be taken into account when calculating the weight of the cable, such as the weight of the metal sheath, the weight of the strapping and filling material, etc., but usually the weight of these factors is a small percentage of the total weight. During the installation and use of the cable, accurate weight calculation can ensure the reasonable distribution of the cable's suspension, support and load capacity, so as to ensure its long-term reliable operation.

The material of construction of the cable

The vast majority of wire and cable products are products with the same cross-section (cross-section) shape (ignoring errors due to manufacturing) and are in the form of long strips, which is determined by the fact that they are used as constituent lines or coils in systems or equipment. Therefore, to study and analyze the structural composition of cable products, we only need to observe and analyze from its cross-section.

The structural elements of wire and cable products can be generally divided into four main structural components: wire, insulation, shielding and sheath, as well as socks such as filling elements and bearing elements. According to the use requirements and application of the product, some products have a very simple structure.

In a sense, the wire and cable manufacturing industry is an industry of material finishing and assembly. First, the amount of materials used is huge, and the material cost in cable products accounts for 80-90% of the total manufacturing cost.

The above content refers to Encyclopedia - Cable.