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Cable's sectional area and its relative passing current
The safe current carrying capacity of 2.5 mm2 copper power line is - 28a.
Safe current carrying capacity of 4mm2 copper power line - 35A.
Safe current carrying capacity of 6 mm2 copper power line - 48A.
The safe current carrying capacity of 10 mm2 copper power line is - 65A.
The safe current carrying capacity of 16 mm2 copper power line is - 91A.
Safe current carrying capacity of 25 mm2 copper power line - 120a.
In case of aluminum wire, the wire diameter shall be 1.5-2 times that of copper wire. If the copper wire current is less than 28a, take 10A per square millimeter for safety.
If the copper wire current is greater than 120a, take 5A per square millimeter.
