A home larger than 2,000 square feet that has central air-conditioning or electric heat probably needs a 200-amp service.

Do I need 150 or 200 amp service?

200 Amps is the minimum recommended service panel size in full size modern homes. Some situations will require significantly more. Larger homes or homes with a machine shop or car lift in the garage can require as many as 400 amps.

What is involved in upgrading to 200 amp service?

What is involved in upgrading to a 200-amp service? A licensed electrician will need to obtain a permit to upgrade to 200-amp service. You'll likely need to disconnect the power to replace the meter base and install the 200-amp service wire, main disconnect, and 200-amp electrical service panel.