BS 7769-1.2:1994 Electric cables. Calculation of the current rating. Current rating equations (100% load factor) and calculation of losses. Sheath eddy current loss factors for two circuits in flat formation
Should be used for most sizes of aluminium-sheathed cables, but is not required for lead-sheathed cables unless they are unusually large.
BS 7769-1.2:1994 history
1994BS 7769-1.2:1994 Electric cables. Calculation of the current rating. Current rating equations (100% load factor) and calculation of losses. Sheath eddy current loss factors for two circuits in flat formation