Is it dangerous if the live and neutral wires of a small single-phase generator are connected in rev

A fire wire, a zero and two wires are connected to the house, regardless of the neutral wire or the live wire. The ground wire is used for protection. For example, if a generator produces electricity with a motor, the ground wire. Must be connected to the motor. Connect the outer shell of the generator. Of course, there must be a leakage protection switch between the generator and the motor. The fire and zero of the generator should be connected to the input interface of the leakage protection. The generator ground wire cannot be used as a neutral wire. Any high voltage piezoelectric object must be used according to regulations, otherwise this is dangerous if you are connected to an earth that has no voltage, make sure you don't do this. connect it to a grounded outlet in your home. This could cause the generator shell to load, which is dangerous! ! ! !