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Specific Wire Properties

Instructions

The Construction Monkey Conductor calculator lets you figure out electrical characteristics of wires including the ampacity, circular mills, area, resistance, reactance, impendance, conduit fill, and voltage drop.

Make your selections below and the form will automatically update the values.

Conductor

Insulation:

Wire Size:

Full Conductor Properties

Conductor Material:

Temperature Rating:

Ampacity¹
Circular Mills
Outside Diameter
Area
Reactance³
Resistance³
Impedance²

Conduit Properties

Conduit Type:

Voltage Drop

Voltage:

Max Voltage Drop	Max Length
2% Voltage Drop
3% Voltage Drop
5% Voltage Drop

Length:

feet

Load:

amps

Good design practices limit wire ampacity due to over current to 80% of rated ampacity under most circumstances.

The wire size will not be able to handle this load and it will cause catastrophic failures.

Good design requirements should limit overall voltage drop to less than 5%.

Notes:

¹Ampacity based NEC Table 310-16, which is based on three (3) current carrying conductors at 30 degrees Celsius Ambient

²Calculations based on 0.85 Power Factor

³Based on NEC Table 9

⁴Check Conductor derating Factors for more than three (3) current carrying conductors

⁵Load for Voltage Drop is calculated based on 80% ampacity load of maximum allowable ampacity

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Conduits

Conduit Tables Conduit Fill Tables Conduit Size Selector Duct Bank

Conductors

General Wire Properties Specific Wire Properties Conductor Insulation Tables

Miscellaneous

Box Fill Calculations Optional Residential

Manpower/Productivity

Manpower Projections Productivity Changes Hour Estimator

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No guarantees are made as to the accuracy of the calculation or compliance with local codes. Verify all calculations with a professional engineer. If you find an error, or have a suggestion, please send us an email.