Yes you can. This is what ACSR over head wiring is. Aluminium Conductor Steel Reinforced.
The gauge depends on how the maximum current supplied through the wire.
The circuit will have to be rewired with a different gauge wire.
the gauge of the wire determines how much amperage a wire can carry the insulation determines how much voltage the wire can handle
14 gauge wire is for 15 amp circuits. At 220 volts that would be enough for 2.4 kw.At 120 volts it would need 12 gauge wire which is rated for 20 amps.
A rather thin copper or aluminum wire.
AWG # 6 copper or AWG # 4 aluminum
A 100 gauge piece of aluminum has a thickness of 0.0010 inches. Gauge is a universal system used to measure the thickness of metal and wire.
10 gauge will suffice.