The answer to 'what size GFCI outlet do I need' is that the size of the GFCI (Ground Fault Circuit Interrupter) outlet you need will depend on the specific electrical requirements of your home and the appliances or devices you plan to connect to it. GFCI outlets come in standard sizes like 15 amp and 20 amp, and the size you choose should match the circuit breaker size for the electrical circuit the GFCI will be installed on.
When selecting a GFCI outlet, you'll want to ensure it's rated for the correct amperage to safely handle the electrical load. For most standard household circuits, a 15 amp GFCI outlet is sufficient, but larger circuits like those for kitchen countertops or laundry rooms may require a 20 amp GFCI. It's important to consult with a licensed electrician to determine the appropriate GFCI outlet size for your specific needs.