The answer to 'what size emergency electrical service do I need' is that the size of your emergency electrical service depends on the total electrical load of your home. As a general guideline, a 200-amp emergency electrical service is recommended for most standard-sized homes. This provides enough power to run essential appliances, lights, and other critical electrical systems during a power outage.
To determine the right size for your home, you'll need to calculate your total electrical load, which includes the wattage of all your major appliances, lighting, and other electrical devices. An electrician can help you assess your needs and recommend the appropriate emergency electrical service size. They can also ensure the installation meets local building codes and safety standards.