The answer to 'what size electrical panel do I need' is that the size of your electrical panel depends on the total electrical load of your home. In general, most homes require a 100-amp or 200-amp electrical panel to safely power all the electrical devices and appliances. Factors like the size of your home, the number of bedrooms, and the types of appliances you have will determine the appropriate panel size.
Smaller homes under 1,500 square feet may only need a 100-amp panel, while larger homes over 3,000 square feet often require a 200-amp panel. If you have high-powered appliances like electric ovens, electric dryers, or electric heating, you'll likely need a 200-amp panel to handle the electrical load. It's best to consult a licensed electrician to evaluate your home's needs and recommend the right size electrical panel.