The steady-state ampacity is derived from the heat balance equation:

Cables installed in open air dissipate heat efficiently via convection and radiation.

Cable current-carrying capacity: 30 A (from table) Ambient temperature correction factor: 0.94 (from table) Installation condition correction factor: 1.00 (from table)

Soil acts as a thermal insulator.

Cable Current Rating Calculation Jun 2026

The steady-state ampacity is derived from the heat balance equation:

Cables installed in open air dissipate heat efficiently via convection and radiation.

Cable current-carrying capacity: 30 A (from table) Ambient temperature correction factor: 0.94 (from table) Installation condition correction factor: 1.00 (from table)

Soil acts as a thermal insulator.

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