PARAMETER (S) | SPECIFICATION (S) | SI Units |
| AC resistance of conductor i at temperature Tc | Ω/m |
| Current through conductor i | A |
| Solar absorptivity of conductor i |
|
| Total solar and sky radiated heat flux rate | W/m2 |
| Effective angle of incidence of sun rays | degrees |
| Projected area of conductor i per unit length | m2/m |
| Diameter of conductor i | Mm |
| Ambient temperature | ˚C |
| Temperature across conductor i | ˚C |
| Max. Conductor (i) temperature | ˚C |
| Min. Conductor (i) temperature | ˚C |
| Density of air | kg/m3 |
| Speed of wind at conductor i | m/s |
| Thermal conductivity of air at temperature Tfilm | W/(m∙˚C) |
| Dynamic viscosity of air | Pa∙s |
| Emissivity of conductor i |
|
| Wind direction factor |
|
| Angle between wind and conductor axis | Degrees |
| Film temperature | ˚C |
| Conductor elevation above sea | M |