Electricians Explain the 3 Types of Residential and Commercial Outlets

Electricians typically deal with various types of outlets in both residential and commercial settings. Here are three common types of outlets that you might encounter:

1. Duplex Receptacles (Standard Outlets):
   Duplex receptacles, often referred to as standard outlets, are the most common type found in homes and businesses. They provide a power source for various electrical devices, such as lamps, chargers, and appliances. Standard outlets have two vertical slots and a round grounding hole. In the United States, these outlets typically supply 120 volts of alternating current (VAC) power.
2. GFCI Outlets (Ground Fault Circuit Interrupter):
   GFCI outlets are designed to enhance electrical safety, particularly in areas where water might be present, such as kitchens, bathrooms, and outdoor spaces. These outlets have “Test” and “Reset” buttons and monitor the flow of current. If they detect an imbalance, such as electricity flowing through a person or water, they quickly interrupt the circuit to prevent electric shocks. GFCI outlets are recognizable by their two buttons and are often required by electrical codes in specific locations.
3. AFCI Outlets (Arc Fault Circuit Interrupter):
   AFCI outlets are primarily used in bedrooms and other living areas to mitigate the risk of electrical fires caused by arcing faults, which are abnormal electrical discharges. These outlets monitor the circuit for signs of arcing and disconnect the power if such conditions are detected. AFCI outlets help prevent fires by interrupting the circuit before dangerous arcing can ignite nearby materials.

In commercial settings, you might encounter variations of these outlets to accommodate higher power demands and specific equipment needs. Additionally, specialized outlets may be installed for specific purposes, such as heavy machinery, commercial kitchens, or medical equipment.

It’s important to note that outlet standards and types can vary by country and region. If you’re unsure about the types of outlets in your residential or commercial space or need to install or replace outlets, it’s recommended to consult a licensed electrician who can ensure compliance with local electrical codes and safety regulations.