How many kilowatts can a 2.5 square copper coin 220V replace?

The theoretical data of 2.5 square line current capacity is 23A.

However, in actual design, when wires are laid in the same direction or in multiple strands, the line loss of 0.7 should be considered.

Therefore, the maximum load of 2.5 square single-strand copper wire is 23x0.7x220=3.5KW

In order to avoid shortening the service life of the conductor due to heating, a 2.5-square single-strand copper wire can generally carry 220V and 2KW at most.