4 square copper wire can carry 5500 watts.

In life, practical copper wire for wire. Conductivity is very good, a large number of used in the manufacture of wires, cables, brushes, etc.; good thermal conductivity, often used to manufacture shall prevent magnetic interference with magnetic instruments, instruments, such as compass, aviation instrumentation, etc.; plasticity is very good, easy to hot and cold pressure processing, can be made into tubes, rods, wires, strips, strips, strips, boards, foils, etc. Copper material. Pure copper products are smelted and processed products.

Power is the amount of work done by an object in a unit of time, i.e., power is a physical quantity that describes how fast or slow work is done. The amount of work is certain, the shorter the time, the greater the value of power. The formula for finding power is power = work / time. Power is a physical quantity that characterizes how fast or slow the work is done.

Kilowatt, the early unit of power for electricity, now has the tendency to extend to the entire field of physics as a unit of power. In electricity, kilowatt hours and degrees are exactly the same, just called different.