Wire Gauge & Current Capacity Calculator
Taylor Microwave, Inc.
14250 S.W. 23rd Lane, Miami, FL 33175
Wire Gauge & Current Capacity Calculator
Based on the Modified Preece Equation
Wire Specifications
Calculated Results
Preece Constant (K)
20,500
Wire Diameter (inches)
—
Wire Diameter (mm)
—
Calculated Current (A)
—
Recommended Operating Current
10% of Modified Preece Calculated Current
—
Modified Preece Equation
I = K × d1.5
I = Calculated current in amperes
K = Material-dependent constant
d = Wire diameter in inches
Recommended current = I × 0.10
K = Material-dependent constant
d = Wire diameter in inches
Recommended current = I × 0.10
Engineering note: This calculation assumes a minimum wire length of 0.040 inches.
The 10% factor is a conservative design criterion, not a guaranteed
continuous-current rating. Actual operating current depends on wire
temperature, cooling, insulation, termination and installation conditions.
Verify thermal performance for the intended application.
The 10% factor is a conservative design criterion, not a guaranteed
continuous-current rating. Actual operating current depends on wire
temperature, cooling, insulation, termination and installation conditions.
Verify thermal performance for the intended application.
Taylor Microwave, Inc. | RF & Microwave Components