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Trades & Professional Tools · Welding & Metal Fabrication

Welding Machine Duty-Cycle Calculator

Scale an entered rated duty cycle to another current using the common inverse-square thermal screening relationship and an optional approved-output guard.

Trades & Professional Tools · Welding & Metal Fabrication

Enter your project measurements

Measured inputs · visitor-entered product and design assumptions

Use verified measurements, machine or vehicle data, qualified procedure values, field cycle observations, and the stated coordinate or unit convention. Values stay in this browser.

Trade calculator result

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Enter valid values to see the result.

Your entries are calculated in this browser and are not submitted to 365CALCS.COM.

Quick guide

How to use this calculator

  1. Choose the calculation mode or measurement system that matches the values you actually have.
  2. Enter measured project dimensions and use product-specific coverage, density, yield, resistance, or waste data where requested.
  3. Review the intermediate results before ordering material or applying the result on site.

Calculation method

Calculation method

Estimated duty₂=duty₁×(current₁/current₂)², capped at 100%; available arc minutes per 10-minute period=10×duty₂.

The calculator preserves full internal precision and rounds only displayed results. Quantity outputs round up when whole purchasable pieces are required.

Worked example

Worked example

A 60% duty cycle at 300 A screens to 100% at 200 A by the inverse-square relationship.

Estimated duty₂=duty₁×(current₁/current₂)², capped at 100%; available arc minutes per 10-minute period=10×duty₂.

Supported inputs

Precision and limits

Qualified process and machine-data boundary

Use the qualified procedure, manufacturer cut chart, measured kerf, verified material data, machine limits, ventilation, guarding, interlocks, PPE, and approved production controls for the actual process. These calculators do not establish a safe laser or welding procedure, exposure limit, eyewear, weld acceptance, machine setting, or material compatibility.

Planning scope

This calculator supports measurement, estimating, and scenario planning. It does not inspect a site, select a product, certify a design, or replace drawings, specifications, manufacturer instructions, local codes, permits, or a qualified trade professional.

Measured and product-specific inputs

Nominal dimensions can differ from actual dimensions. Verify inside pipe diameters, actual lumber sizes, product coverage, bag yield, material density, conductor resistance, waste, and packaging against the materials used on the project.

Safety and regulatory limits

Electrical, HVAC, structural, excavation, roofing, pressure, lifting, and life-safety work may require jurisdiction-specific calculations and professional approval. Do not use a generic planning result as a code-compliance or safety determination.

Precision and privacy

Inputs accept bounded plain decimals. Calculations remain in this browser and raw entered project values are not submitted to 365CALCS.COM.

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