+30 Does Your Home Use One Phase From The Power Lines References. The buzzing sound, called corona, happens when the air around the electrical lines break down, or ionizes. The total voltage of a two.

So, that’s just what we do. Transformers at power plants boost the voltage up to 100,000 volts and sometimes much higher before sending electricity on its way over. Some houses will have one of the phases + neutral (single phase) and some houses will.