What is the voltage of standard electrical outlets in most residential buildings?

In most residential buildings in the United States, standard electrical outlets are typically rated at 120 volts. This voltage level is designed to safely power a variety of common household appliances and electronic devices, such as lamps, televisions, computers, and kitchen appliances. The 120-volt system effectively balances safety and efficiency for everyday household use, allowing for sufficient power delivery without posing excessive risk of electrical shock or fire hazards.

Higher voltage options, such as 240 volts, 208 volts, and 480 volts, are generally found in specialized applications. For instance, 240 volts is often used for heavy-duty appliances like electric dryers and ranges, while 480 volts is commonly seen in industrial settings for three-phase power systems. Thus, understanding that 120 volts is the standard voltage in residential settings is crucial for recognizing how everyday devices are designed to operate within that electrical framework.