Abstract: An electrical multi-purpose apparatus includes a base frame unit, and an internal combustion engine, an electric generator, an output unit, an air compressor, and a jet cleaner that are disposed on the base frame unit. The internal combustion engine includes a combustion engine motor. The electric generator is driven operably by the internal combustion engine for generating electric power. The output unit, the air compressor, and the jet cleaner are electrically connected to the electric generator. The air compressor includes an air compressor motor. The jet leaner includes a jet cleaner motor. The combustion engine motor, the air compressor motor, and the jet cleaner motor have different motor speeds.