Online Calculators and Tables to Help You Determine Proper Wire Size
The table below lists the tables offered for reference on this site, as well as a description of each. Many additional tables are in development, and will be added to this site in the near future.
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List of Wire Size Tables
| Table | Description |
|---|---|
| Maximum Allowable Ampacities for Conductors in Raceway, Cable or Earth (30°C) | Contains ampacity values for different wire sizes, insulation, conductor type for conductors in a raceway, cable or burried in Earth with an ambient temperature of 30°C. |
| Maximum Allowable Ampacities for Conductors in Free Air (30°C) | Contains ampacity values for different wire sizes, insulation, conductor type for conductors in open air with an ambient temperature of 30°C. |
| Maximum Allowable Ampacities for Conductors in Raceway, Cable or Earth (40°C) | Contains ampacity values for different wire sizes, insulation, conductor type for conductors in a raceway, cable or burried in Earth with an ambient temperature of 40°C. |
| Maximum Allowable Ampacities for Conductors in Free Air (40°C) | Contains ampacity values for different wire sizes, insulation, conductor type for conductors in open air with an ambient temperature of 40°C. |
| Wire Size Correction Factors | Contains correction factors to multiply maximum ampacity values by for ambient temperatures other than 30°C and more than three current-carrying conductors in a raceway or cable. |
| FLA, Wire Size and Other Data: Three-Phase AC Motors | Full-load amps, wire size, and circuit protection devices for three-phase AC motors. |
| Full-Load Amps for Three-Phase AC Motors | Full-load current data for three-phase AC motors at standard voltages. |
| Arc Flash Tables | Contains Hazard Risk Categories, PPE and general Flash Protection Boundaries for arc flash incident energy levels. |
| Ground Conductor Size Table | Contains recommended ground conductor sizes based on over-current protection devices in circuit. |
| Maximum Distance Between Conduit Supports | Contains the maximum distance between condcuit supports for rigid metallic and non-metallic conduit. |
