Enter the number of individual copper conductors within the cable jacket.
Approximate thickness of the outer insulating jacket and any filler material in millimeters (mm).
Density of the jacket material (e.g., PVC, PE). Typical values range from 0.9 to 1.5 g/cm³.
Calculation Results
— kg
Total Copper Weight:— kg
Total Jacket Weight:— kg
Total Cable Weight:— kg
Copper Volume:— cm³
Jacket Volume:— cm³
Weight is calculated using the formula: Weight = Volume × Density.
Copper's standard density is ~8.96 g/cm³. Jacket weight depends on its volume and provided density.
Weight Distribution by Conductor Count
Visualizing how total cable weight changes with the number of conductors for a fixed length and gauge.
Copper Cable Properties by AWG
AWG
Diameter (mm)
Cross-Sectional Area (mm²)
Approx. Copper Weight per Meter (kg/m)
24
0.511
0.203
0.00181
22
0.644
0.324
0.00288
20
0.812
0.518
0.00461
18
1.024
0.823
0.00732
16
1.291
1.307
0.01163
14
1.628
2.081
0.01851
12
2.053
3.309
0.02941
10
2.588
5.262
0.04678
8
3.264
8.369
0.07436
6
4.115
13.30
0.1180
4
5.189
21.15
0.1877
2
6.544
33.55
0.2984
1
7.348
42.25
0.3755
0
8.282
53.35
0.4745
00
9.266
67.18
0.5976
000
10.40
84.54
0.7518
0000
11.68
106.8
0.9500
Understanding the Copper Cable Weight Calculator
What is Copper Cable Weight Calculation?
Copper cable weight calculation is the process of estimating the total mass of a specific length and type of copper cable. This involves understanding the properties of copper, the cable's construction (including conductor size, number of conductors, and insulation/jacket materials), and applying physical principles like density and volume. Accurate weight estimation is crucial for several industries, including electrical contracting, telecommunications, manufacturing, logistics, and scrap metal recycling.
Who should use it: Project managers, electrical engineers, procurement specialists, logistics coordinators, electricians, cable manufacturers, and even individuals involved in selling or recycling copper wire will find this calculator invaluable. It helps in budgeting, planning transportation, ensuring structural support, and determining material costs or scrap value.
Common misconceptions: A frequent misunderstanding is that cable weight is solely determined by its gauge. In reality, the number of conductors, the type and thickness of insulation and jacket materials, and even the stranding of the conductors can significantly impact the overall weight. Another misconception is that all copper is priced or valued the same; purity and market fluctuations affect its worth.
Copper Cable Weight Formula and Mathematical Explanation
The fundamental principle behind calculating cable weight is the relationship between mass, volume, and density: Mass = Volume × Density.
For a copper cable, we typically need to calculate the weight of the copper conductors and the weight of the non-conductive materials (insulation and jacket) separately, then sum them up.
1. Copper Conductor Weight Calculation:
The weight of the copper conductors depends on their total volume and the density of copper.
Copper Volume: The volume of a single conductor is its cross-sectional area multiplied by its length. Since there are multiple conductors, we multiply this by the number of conductors.
Volume_Copper = (Cross_Sectional_Area_per_Conductor × Length) × Number_of_Conductors
Copper Weight: We then multiply the total copper volume by the density of copper.
Weight_Copper = Volume_Copper × Density_Copper
2. Jacket and Insulation Weight Calculation:
Estimating the volume of the jacket and insulation is more complex as it depends on the cable's overall diameter and the thickness of these layers. A simplified approach assumes a cylindrical volume for the jacket.
Cable Outer Diameter: This can be approximated based on conductor diameter, number of conductors, and jacket thickness. For simplicity in this calculator, we focus on the jacket volume based on its thickness around the core. A more precise calculation would involve conductor spacing and filler materials.
Jacket Volume: The volume of the jacket can be approximated as the volume of a cylinder with the outer diameter of the jacket minus the volume of the inner core (conductors + fillers). A simpler approximation used here is based on the jacket's thickness contributing to the overall volume increase. For this calculator, we'll approximate the jacket volume by considering the volume added by the jacket thickness around the conductors.
Approx_Jacket_Volume = (π × ((Radius_Outer_Jacket)² - (Radius_Inner_Core)²)) × Length
Where `Radius_Outer_Jacket` is the radius of the cable including the jacket, and `Radius_Inner_Core` is the radius excluding the jacket. A simplified approach focuses on the volume of the jacket layer itself. Let's refine this:
A more practical approximation for the jacket volume: We can estimate the volume of the jacket material by calculating the total volume of the cable (approximated as a cylinder) and subtracting the volume occupied by the conductors and any internal void space.
A common shortcut is to calculate the volume of the jacket as:
Jacket_Volume = (Total_Cable_Cross_Sectional_Area - Total_Conductor_Cross_Sectional_Area) × Length
However, this requires knowing the total cable diameter.
For this calculator, we'll use an input for jacket thickness and density directly to estimate jacket weight. A simplified estimation considers the jacket's contribution to the cross-sectional area.
Let's assume the Jacket Volume is primarily driven by the jacket thickness added around the estimated cable diameter.
Approx_Jacket_Volume_per_meter = π * ( (Conductor_Radius * sqrt(Num_Conductors) + Jacket_Thickness_mm/10)^2 - (Conductor_Radius * sqrt(Num_Conductors))^2 ) * 1000 // Rough estimation
The provided calculator simplifies this by directly calculating jacket volume based on a provided density and an estimated volume contribution from the jacket thickness.
The total weight is the sum of the copper conductor weight and the jacket/insulation weight.
Total_Weight = Weight_Copper + Weight_Jacket
Variables Table:
Variable
Meaning
Unit
Typical Range
Cable Length
Total length of the cable.
Meters (m)
1 – 10,000+
Cable Gauge (AWG)
Standard size of the copper conductor.
AWG
24 AWG to 0000 AWG
Number of Conductors
Individual wires within the cable sheath.
Count
1 – 50+
Jacket Thickness
Thickness of the outer protective layer.
Millimeters (mm)
0.5 – 5.0
Jacket Density
Mass per unit volume of the jacket material.
grams per cubic centimeter (g/cm³)
0.9 – 1.5
Cross-Sectional Area
Area of the copper conductor's cross-section.
mm²
0.203 (24 AWG) – 106.8 (0000 AWG)
Copper Density
Mass per unit volume of pure copper.
grams per cubic centimeter (g/cm³)
~8.96
Practical Examples (Real-World Use Cases)
Example 1: Residential Electrical Wiring
Scenario: An electrician is installing a 240V circuit for a dryer. They need to run 50 meters of 10 AWG copper cable, which contains 3 conductors (2 hot, 1 neutral) plus a ground wire, for a total of 4 conductors. The cable has a jacket thickness of 1.2 mm and the jacket material (likely PVC) has a density of 1.35 g/cm³.
Inputs:
Cable Length: 50 m
Cable Gauge: 10 AWG
Number of Conductors: 4
Jacket Thickness: 1.2 mm
Jacket Density: 1.35 g/cm³
Calculation (using the calculator's logic):
Approx. Copper Weight per meter for 10 AWG: 0.04678 kg/m
Total Copper Weight: 50 m * 4 conductors * 0.04678 kg/m = 9.356 kg
(Calculator estimates Jacket Volume and Weight based on inputs) Let's say the calculator estimates ~2.1 kg for the jacket.
Total Cable Weight: 9.356 kg (Copper) + 2.1 kg (Jacket) = 11.456 kg
Interpretation: The electrician knows that this 50-meter cable run weighs approximately 11.5 kg. This is important for planning how to pull the cable, especially through conduit or tight spaces, and for estimating the total material weight for the project budget and transport.
Example 2: Data Center Power Distribution
Scenario: A data center is being set up, requiring a substantial power feed. They need to install 200 meters of 2/0 AWG copper cable with 3 conductors. The cable jacket is thicker, measuring 2.0 mm, and is made of a denser material (e.g., PE blend) with a density of 1.15 g/cm³.
Inputs:
Cable Length: 200 m
Cable Gauge: 2/0 AWG (often represented as 00)
Number of Conductors: 3
Jacket Thickness: 2.0 mm
Jacket Density: 1.15 g/cm³
Calculation (using the calculator's logic):
Approx. Copper Weight per meter for 2/0 AWG: 0.5976 kg/m
Total Copper Weight: 200 m * 3 conductors * 0.5976 kg/m = 358.56 kg
(Calculator estimates Jacket Volume and Weight) Let's say the calculator estimates ~15.5 kg for the jacket.
Total Cable Weight: 358.56 kg (Copper) + 15.5 kg (Jacket) = 374.06 kg
Interpretation: This single 200-meter cable run weighs over 374 kg. This significantly impacts the structural load considerations for cable trays, conduits, and overhead support systems within the data center. It also highlights the substantial amount of copper being utilized, relevant for cost and potential future salvage value.
How to Use This Copper Cable Weight Calculator
Using this calculator is straightforward and designed to provide quick, accurate results.
Enter Cable Length: Input the total length of the copper cable you are measuring in meters (m).
Select Cable Gauge (AWG): Choose the American Wire Gauge (AWG) that corresponds to your copper conductor size from the dropdown menu. This is a critical input as it dictates the conductor's cross-sectional area and copper weight per meter.
Specify Number of Conductors: Enter how many individual copper wires are contained within the cable's jacket. For example, a standard 120V household wire might have one conductor, while a three-phase power cable could have three.
Input Jacket Thickness: Provide the approximate thickness of the outer insulating jacket and any filler material in millimeters (mm).
Enter Jacket Density: Input the density of the jacket material in grams per cubic centimeter (g/cm³). If unsure, use a typical value for the material (e.g., ~1.2 g/cm³ for PVC, ~0.95 g/cm³ for PE).
Click 'Calculate Weight': Once all fields are populated, click the button. The calculator will instantly display the estimated weights.
How to Read Results:
Primary Highlighted Result: This shows the Total Cable Weight, giving you the most immediate figure.
Intermediate Values: You'll see breakdowns for Total Copper Weight, Total Jacket Weight, Copper Volume, and Jacket Volume. These provide insight into the composition of the cable's mass.
Table Data: The table provides a quick reference for standard copper cable properties based on AWG.
Chart: The dynamic chart visually represents how the total cable weight changes based on the number of conductors for the selected gauge and length.
Decision-Making Guidance:
The results can inform several decisions:
Logistics: Determine shipping costs, vehicle requirements, and handling procedures.
Installation: Assess the physical effort required for pulling and managing cables, and the necessary support structures (cable trays, conduits).
Procurement: Accurately estimate material quantities for project bids and purchases.
Recycling/Salvage: Estimate the potential value of scrap copper cable based on its copper content.
Key Factors That Affect Copper Cable Weight Results
While the calculator provides a robust estimate, several real-world factors can influence the actual weight of copper cable:
Conductor Material Purity: The calculator assumes pure copper (density ~8.96 g/cm³). However, commercial copper may have slight impurities affecting its density and thus weight. This is usually a minor variation for standard cables.
Stranding vs. Solid Conductor: Cables often use stranded conductors (multiple smaller wires twisted together) for flexibility. While the overall cross-sectional area is similar, the slight air gaps in stranding can marginally reduce the effective density and weight compared to a solid conductor of the exact same copper volume.
Jacket Material Variations: Different types of polymers (PVC, XLPE, PE, LSZH – Low Smoke Zero Halogen) have different densities. The calculator uses a user-input density, making it adaptable, but using an incorrect density value will skew the jacket weight calculation.
Internal Fillers and Shields: Some cables contain non-conductive filler materials (like polypropylene or cotton) to maintain roundness or provide separation between conductors. They may also include metallic or non-metallic shielding layers. These add to the overall cable weight beyond just the conductors and jacket.
Manufacturing Tolerances: Cable dimensions (conductor diameter, jacket thickness) can vary slightly due to manufacturing processes. These tolerances can lead to minor deviations in the calculated weight from the actual weight.
Moisture Absorption: Certain jacket materials can absorb moisture over time, slightly increasing their weight. This is more relevant for cables exposed to prolonged damp conditions.
Temperature Effects: While density changes slightly with temperature, for practical cable weight calculations at ambient temperatures, this effect is negligible.
Corrosion/Oxidation: Over long periods, especially in harsh environments, the copper conductors or outer jacket might degrade, potentially altering the weight (though corrosion usually increases mass).
Frequently Asked Questions (FAQ)
Q1: What is the standard density of copper used in cables?
A: The standard density of pure copper is approximately 8.96 grams per cubic centimeter (g/cm³), which is equivalent to 8960 kilograms per cubic meter (kg/m³).
Q2: Does the calculator account for the weight of insulation on individual conductors?
A: This calculator primarily focuses on the copper conductor weight and the outer jacket weight. Individual conductor insulation, while adding to the overall diameter and slightly to the weight, is often grouped conceptually with jacket material or considered a smaller contributor compared to the copper itself for common gauges. For highly specialized cables, a more detailed calculation might be needed.
Q3: How accurate is the jacket weight calculation?
A: The jacket weight calculation is an estimation. It relies on the provided jacket thickness and density. Accurately determining the exact volume of the jacket material, especially in complex cable constructions with fillers and multiple layers, can be challenging without specific manufacturer data.
Q4: Can I use this calculator for aluminum cables?
A: No, this calculator is specifically designed for copper cables. Aluminum has a different density (approx. 2.7 g/cm³), so you would need a separate calculator or to adjust the density inputs significantly (if the calculator allowed for it) and ensure the AWG data tables were also adjusted for aluminum's conductivity and diameter equivalents.
Q5: What does AWG stand for and why is it important?
A: AWG stands for American Wire Gauge. It's a standard system for specifying the diameter (and thus cross-sectional area) of solid electrical conductors. A *lower* AWG number indicates a *thicker* wire with a larger diameter, greater cross-sectional area, and consequently, more copper and higher weight per unit length.
Q6: Is the weight per meter in the table exact?
A: The weights per meter in the table are approximations based on standard conductor diameters and the density of copper. They do not typically include the weight of any individual conductor insulation or the outer jacket.
Q7: How does conductor stranding affect weight?
A: While stranding increases flexibility, it can slightly decrease the overall density compared to a solid conductor of the same nominal area due to small air gaps. However, for most practical weight estimations, using the cross-sectional area derived from AWG and the density of solid copper provides a sufficiently accurate result.
Q8: Where can I find the density of specific jacket materials?
A: Manufacturers' datasheets for cables or raw polymer materials are the best source. General-purpose PVC typically falls around 1.3-1.45 g/cm³, while Polyethylene (PE) might be around 0.92-0.96 g/cm³. Low Smoke Zero Halogen (LSZH) compounds can vary widely but are often in the 1.1-1.4 g/cm³ range.
Related Tools and Internal Resources
Voltage Drop Calculator – Essential for ensuring efficient power delivery over cable lengths.
// Copper density in g/cm³
var COPPER_DENSITY = 8.96;
// AWG to cross-sectional area in mm² mapping
var AWG_TO_AREA = {
'24': 0.203, '22': 0.324, '20': 0.518, '18': 0.823, '16': 1.307,
'14': 2.081, '12': 3.309, '10': 5.262, '8': 8.369, '6': 13.30,
'4': 21.15, '2': 33.55, '1': 42.25, '0': 53.35, '00': 67.18,
'000': 84.54, '0000': 106.8
};
// Approximate copper weight per meter per conductor (kg/m) – derived from area * density
var AWG_TO_WEIGHT_PER_METER = {};
for (var gauge in AWG_TO_AREA) {
// Area is in mm², density is in g/cm³. Convert area to cm²: mm² / 100 = cm²
// Weight per meter (g) = Area (cm²) * Density (g/cm³) * Length (100 cm for 1m)
// Weight per meter (kg) = Weight per meter (g) / 1000
AWG_TO_WEIGHT_PER_METER[gauge] = (AWG_TO_AREA[gauge] / 100) * COPPER_DENSITY * 100 / 1000;
}
// Chart variables
var weightChart;
var chartData = {
labels: [],
copperWeights: [],
totalWeights: []
};
function validateInput(id, value, min, max, errorMessageId, helperTextId) {
var errorElement = document.getElementById(errorMessageId);
var inputElement = document.getElementById(id);
var isValid = true;
errorElement.innerText = ";
errorElement.classList.remove('visible');
inputElement.style.borderColor = '#ced4da'; // Default border color
if (value === null || value === " || isNaN(parseFloat(value))) {
errorElement.innerText = 'This field is required and must be a number.';
isValid = false;
} else {
var numValue = parseFloat(value);
if (numValue max) {
errorElement.innerText = 'Value is too high.';
isValid = false;
}
}
if (!isValid) {
inputElement.style.borderColor = 'var(–error-color)';
}
return isValid;
}
function calculateWeight() {
var cableLength = parseFloat(document.getElementById('cableLength').value);
var cableGauge = document.getElementById('cableGauge').value;
var conductorCount = parseFloat(document.getElementById('conductorCount').value);
var jacketThickness = parseFloat(document.getElementById('jacketThickness').value);
var jacketDensity = parseFloat(document.getElementById('jacketDensity').value);
var isValid = true;
if (!validateInput('cableLength', cableLength, 0, null, 'cableLengthError')) isValid = false;
if (!validateInput('conductorCount', conductorCount, 0, null, 'conductorCountError')) isValid = false;
if (!validateInput('jacketThickness', jacketThickness, 0, null, 'jacketThicknessError')) isValid = false;
if (!validateInput('jacketDensity', jacketDensity, 0.1, 5.0, 'jacketDensityError')) isValid = false; // Reasonable density range
if (!isValid) {
document.getElementById('primaryResult').innerText = '–';
document.getElementById('totalCopperWeight').innerText = '– kg';
document.getElementById('totalJacketWeight').innerText = '– kg';
document.getElementById('totalCableWeight').innerText = '– kg';
document.getElementById('copperVolume').innerText = '– cm³';
document.getElementById('jacketVolume').innerText = '– cm³';
return;
}
// — Calculations —
var conductorAreaMM2 = AWG_TO_AREA[cableGauge];
var copperWeightPerMeterPerConductor = AWG_TO_WEIGHT_PER_METER[cableGauge];
// Copper Volume (cm³)
// Area in mm² to cm²: divide by 100
// Volume = Area(cm²) * Length(cm) * Num_Conductors
var copperVolumeCM3 = (conductorAreaMM2 / 100) * (cableLength * 100) * conductorCount;
// Total Copper Weight (kg)
var totalCopperWeightKG = copperWeightPerMeterPerConductor * cableLength * conductorCount;
// Jacket Volume Calculation (Approximation)
// This is a simplified model. Real cable geometry is complex.
// We approximate the jacket volume by considering the volume added by its thickness.
// We need an estimate of the core diameter to calculate jacket volume accurately.
// Let's estimate core diameter based on conductor area and count, then add jacket thickness.
// Radius of a single conductor (mm) from area: A = pi * r^2 => r = sqrt(A/pi)
var conductorRadiusMM = Math.sqrt(conductorAreaMM2 / Math.PI);
// Approximate total conductor bundle radius (mm) – assuming tightly packed, this is a simplification.
// A better approximation might involve packing factor, but for simplicity:
// Consider the approximate diameter created by the conductors and their spacing.
// Let's use a simpler volume estimation based on adding jacket thickness to a conceptual radius.
// Estimating total cable radius including jacket:
// This requires assumptions about how conductors fill the space.
// A common simplification is to consider the jacket volume as an added layer.
// Let's estimate the effective radius of the conductor bundle.
// A very rough estimate for the radius of the conductor bundle: conductorRadiusMM * sqrt(conductorCount) – this is NOT geometrically accurate for > 3 conductors.
// A more robust way is to calculate the total cross-sectional area occupied by conductors and then estimate the cable's outer diameter.
// Let's use a simplified approach: Calculate the volume of the jacket as if it's a cylindrical sleeve around the cable's core.
// To do this, we need the radius of the core (conductors + fillers) and the outer radius (core + jacket).
// A very rough estimate of the effective core radius (R_core) might be derived from conductorRadiusMM and conductorCount.
// Let's use a simplified volume calculation:
// Volume added by jacket = pi * (R_outer_jacket^2 – R_core^2) * Length
// R_outer_jacket = R_core + jacketThickness_mm
// To get R_core, we can approximate it based on conductor diameter and count.
// For simplicity in this calculator, let's estimate jacket volume based on the area increase due to thickness.
// Assume jacket adds a layer of thickness 't' around a core of radius 'r_core'.
// Jacket Area = pi * (r_core + t)^2 – pi * r_core^2 = pi * (r_core^2 + 2*r_core*t + t^2 – r_core^2) = pi * (2*r_core*t + t^2)
// This still needs r_core.
// Let's directly use the provided jacket thickness and density to calculate jacket volume using a general volume estimation method.
// A practical approximation: Assume the jacket adds a fixed volume based on its thickness around the conductor bundle.
// Simplified Jacket Volume estimation:
// Calculate volume of a cylinder with outer jacket radius and subtract volume of inner core (conductors + void).
// A crude estimation of the cable core radius (before jacket):
// Based on conductor radius and count. For N conductors, max radius is roughly N * conductorRadiusMM.
// Let's use a simplified formula that directly uses jacket thickness to estimate volume, assuming a core radius derived from conductor size.
// Re-approach: Calculate jacket volume using the cable's *estimated* outer radius and subtract the *estimated* core volume.
// Estimate core radius: roughly conductorRadiusMM * Math.sqrt(conductorCount) IF conductors are arranged in a simple grid. This is often not the case.
// Let's use a formula often found in cable weight estimations:
// Jacket Volume per meter = ( (Outer Diameter / 2) ^ 2 – (Inner Diameter / 2) ^ 2 ) * pi * 1000 (to convert m to mm for mm^2 area)
// Inner Diameter (core) is tricky. Let's use a simpler estimation for jacket volume directly related to thickness.
// A common simplified method for jacket volume:
// Volume ≈ (Outer Diameter × π × Jacket Thickness) × Length
// Requires Outer Diameter. Outer Diameter ≈ sqrt(Total Conductor Area / (π * packing_factor)) + 2 * Jacket Thickness
// This is getting complex. Let's simplify for the user input.
// Assume jacket volume is proportional to length and thickness, and some factor related to conductor size.
// Let's try this approximation:
// Jacket Volume per meter (cm³) = (Area of jacket annulus) * 1000 (for m to cm)
// Area of jacket annulus per meter = (Outer Radius² – Inner Radius²) * π
// Inner Radius (core radius) can be approximated. Let's assume core radius is roughly conductorRadiusMM * sqrt(conductorCount). This is weak.
// Let's use a simpler heuristic based on given inputs:
// We have jacket thickness and density. We need jacket volume.
// Let's relate jacket volume to the total cross-sectional area increase.
// A VERY simplified model for jacket volume:
// Consider the cross-sectional area of the jacket layer. This area is approximately perimeter * thickness.
// Perimeter can be estimated from conductor size and count.
// If we assume the cable forms a roughly circular shape, the circumference ~ 2*pi*r_core.
// Jacket Area ~ (2*pi*r_core) * jacketThickness_mm
// r_core itself is complex. Let's use conductorAreaMM2 * conductorCount as a proxy for conductor cross-section.
// Effective core radius from conductor area: R_core_eff ≈ sqrt( (conductorAreaMM2 * conductorCount) / (Math.PI * 0.785) ) (assuming ~78.5% fill factor for conductors)
var effectiveCoreRadiusMM = Math.sqrt((conductorAreaMM2 * conductorCount) / (Math.PI * 0.785)); // rough estimate
// Jacket cross-sectional area (mm²)
var jacketAreaMM2 = Math.PI * (Math.pow(effectiveCoreRadiusMM + jacketThickness, 2) – Math.pow(effectiveCoreRadiusMM, 2));
// Convert mm² to cm²: divide by 100
var jacketVolumeCM3 = (jacketAreaMM2 / 100) * (cableLength * 100); // Volume in cm³
// Total Jacket Weight (kg)
// Density is in g/cm³. Volume is in cm³. Weight = Volume * Density (in grams)
// Convert grams to kg: divide by 1000
var totalJacketWeightKG = (jacketVolumeCM3 * jacketDensity) / 1000;
// Total Cable Weight (kg)
var totalCableWeightKG = totalCopperWeightKG + totalJacketWeightKG;
// Format results
var primaryResultFormatted = totalCableWeightKG.toFixed(2);
var copperWeightFormatted = totalCopperWeightKG.toFixed(2);
var jacketWeightFormatted = totalJacketWeightKG.toFixed(2);
var cableWeightFormatted = totalCableWeightKG.toFixed(2);
var copperVolumeFormatted = copperVolumeCM3.toFixed(2);
var jacketVolumeFormatted = jacketVolumeCM3.toFixed(2);
document.getElementById('primaryResult').innerText = primaryResultFormatted + ' kg';
document.getElementById('totalCopperWeight').innerText = copperWeightFormatted + ' kg';
document.getElementById('totalJacketWeight').innerText = jacketWeightFormatted + ' kg';
document.getElementById('totalCableWeight').innerText = cableWeightFormatted + ' kg';
document.getElementById('copperVolume').innerText = copperVolumeFormatted + ' cm³';
document.getElementById('jacketVolume').innerText = jacketVolumeFormatted + ' cm³';
// Update chart data
updateChart(conductorCount, totalCopperWeightKG, totalCableWeightKG);
}
function resetCalculator() {
document.getElementById('cableLength').value = '100';
document.getElementById('cableGauge').value = '16'; // Default to a common gauge
document.getElementById('conductorCount').value = '2'; // Default to common
document.getElementById('jacketThickness').value = '1.5';
document.getElementById('jacketDensity').value = '1.2';
// Clear errors
document.getElementById('cableLengthError').innerText = ";
document.getElementById('cableGaugeError').innerText = ";
document.getElementById('conductorCountError').innerText = ";
document.getElementById('jacketThicknessError').innerText = ";
document.getElementById('jacketDensityError').innerText = ";
document.getElementById('cableLength').style.borderColor = '#ced4da';
document.getElementById('conductorCount').style.borderColor = '#ced4da';
document.getElementById('jacketThickness').style.borderColor = '#ced4da';
document.getElementById('jacketDensity').style.borderColor = '#ced4da';
document.getElementById('primaryResult').innerText = '–';
document.getElementById('totalCopperWeight').innerText = '– kg';
document.getElementById('totalJacketWeight').innerText = '– kg';
document.getElementById('totalCableWeight').innerText = '– kg';
document.getElementById('copperVolume').innerText = '– cm³';
document.getElementById('jacketVolume').innerText = '– cm³';
// Reset chart data
chartData.labels = [];
chartData.copperWeights = [];
chartData.totalWeights = [];
if(weightChart) weightChart.destroy();
initChart(); // Re-initialize chart with default state
drawChart();
}
function copyResults() {
var primaryResult = document.getElementById('primaryResult').innerText;
var totalCopperWeight = document.getElementById('totalCopperWeight').innerText;
var totalJacketWeight = document.getElementById('totalJacketWeight').innerText;
var totalCableWeight = document.getElementById('totalCableWeight').innerText;
var copperVolume = document.getElementById('copperVolume').innerText;
var jacketVolume = document.getElementById('jacketVolume').innerText;
var assumptions = "Assumptions:\n";
assumptions += "Cable Length: " + document.getElementById('cableLength').value + " m\n";
assumptions += "Cable Gauge: " + document.getElementById('cableGauge').value + " AWG\n";
assumptions += "Number of Conductors: " + document.getElementById('conductorCount').value + "\n";
assumptions += "Jacket Thickness: " + document.getElementById('jacketThickness').value + " mm\n";
assumptions += "Jacket Density: " + document.getElementById('jacketDensity').value + " g/cm³\n";
assumptions += "Copper Density: " + COPPER_DENSITY + " g/cm³\n";
var textToCopy = "— Cable Weight Calculation Results —\n\n";
textToCopy += "Primary Result (Total Cable Weight): " + primaryResult + "\n\n";
textToCopy += "Detailed Breakdown:\n";
textToCopy += "- Total Copper Weight: " + totalCopperWeight + "\n";
textToCopy += "- Total Jacket Weight: " + totalJacketWeight + "\n";
textToCopy += "- Total Cable Weight: " + totalCableWeight + "\n";
textToCopy += "- Copper Volume: " + copperVolume + "\n";
textToCopy += "- Jacket Volume: " + jacketVolume + "\n\n";
textToCopy += assumptions;
// Use navigator.clipboard for modern browsers
if (navigator.clipboard && navigator.clipboard.writeText) {
navigator.clipboard.writeText(textToCopy).then(function() {
alert('Results copied to clipboard!');
}).catch(function(err) {
console.error('Failed to copy text: ', err);
fallbackCopyTextToClipboard(textToCopy); // Fallback for older browsers or specific contexts
});
} else {
fallbackCopyTextToClipboard(textToCopy);
}
}
// Fallback method for copy to clipboard
function fallbackCopyTextToClipboard(text) {
var textArea = document.createElement("textarea");
textArea.value = text;
textArea.style.position = "fixed"; // Avoid scrolling to bottom
textArea.style.left = "-9999px";
textArea.style.top = "-9999px";
document.body.appendChild(textArea);
textArea.focus();
textArea.select();
try {
var successful = document.execCommand('copy');
var msg = successful ? 'successful' : 'unsuccessful';
console.log('Fallback: Copying text command was ' + msg);
alert('Results copied to clipboard!');
} catch (err) {
console.error('Fallback: Oops, unable to copy', err);
alert('Failed to copy results. Please copy manually.');
}
document.body.removeChild(textArea);
}
function updateChart(currentConductorCount, currentCopperWeight, currentTotalWeight) {
var cableGauge = document.getElementById('cableGauge').value;
var cableLength = parseFloat(document.getElementById('cableLength').value);
// Add current values if they represent a distinct conductor count
var index = chartData.labels.indexOf(currentConductorCount.toString());
if (index === -1) {
chartData.labels.push(currentConductorCount.toString());
chartData.copperWeights.push(currentCopperWeight);
chartData.totalWeights.push(currentTotalWeight);
} else {
// Update existing if conductor count is the same (e.g., from reset)
chartData.copperWeights[index] = currentCopperWeight;
chartData.totalWeights[index] = currentTotalWeight;
}
// Sort data by conductor count for a cleaner chart
var combined = [];
for (var i = 0; i < chartData.labels.length; i++) {
combined.push({ label: chartData.labels[i], copper: chartData.copperWeights[i], total: chartData.totalWeights[i] });
}
combined.sort(function(a, b) { return parseInt(a.label) – parseInt(b.label); });
chartData.labels = combined.map(function(item) { return item.label; });
chartData.copperWeights = combined.map(function(item) { return item.copper; });
chartData.totalWeights = combined.map(function(item) { return item.total; });
if (weightChart) {
drawChart(); // Redraw if chart exists
}
}
function initChart() {
var ctx = document.getElementById('weightChart').getContext('2d');
weightChart = new Chart(ctx, {
type: 'line', // Use line chart for showing trends
data: {
labels: chartData.labels,
datasets: [
{
label: 'Approx. Copper Weight (kg)',
data: chartData.copperWeights,
borderColor: 'var(–primary-color)',
backgroundColor: 'rgba(0, 74, 153, 0.2)',
fill: false,
tension: 0.1
},
{
label: 'Total Cable Weight (kg)',
data: chartData.totalWeights,
borderColor: 'var(–success-color)',
backgroundColor: 'rgba(40, 167, 69, 0.2)',
fill: false,
tension: 0.1
}
]
},
options: {
responsive: true,
maintainAspectRatio: true,
scales: {
x: {
title: {
display: true,
text: 'Number of Conductors'
}
},
y: {
title: {
display: true,
text: 'Weight (kg)'
},
beginAtZero: true
}
},
plugins: {
title: {
display: true,
text: 'Cable Weight vs. Number of Conductors (Fixed Length & Gauge)'
},
legend: {
position: 'top',
}
}
}
});
}
function drawChart() {
weightChart.data.labels = chartData.labels;
weightChart.data.datasets[0].data = chartData.copperWeights;
weightChart.data.datasets[1].data = chartData.totalWeights;
weightChart.update();
}
// Initial setup and calculation
document.addEventListener('DOMContentLoaded', function() {
initChart();
calculateWeight(); // Calculate initial values on load
// Add event listeners for real-time updates on input change
var inputs = document.querySelectorAll('.loan-calc-container input, .loan-calc-container select');
for (var i = 0; i < inputs.length; i++) {
inputs[i].addEventListener('input', calculateWeight);
inputs[i].addEventListener('change', calculateWeight); // For select elements
}
});