Is this 200AMP electrcial service, and do I need to upgrade? : HomeImprovement

Hi, we are buying a home and the electrical was flagged as quite old. My understanding is the home has 200amp service with an old pushmatic panel, as well as a more modern sub-panel (see panel photos below). I thought I heard adding the 100amp sub-panel made it 300amp, but I have no idea if that is correct / even possible. So my questions are:

  • Do I have 200 or 300 amp service…or how do I determine that?

  • Looking at the photos is upgrading the pushmatic a priority?

  • If I did want to upgrade say to 400 amp service, what is a ballpark estimate? (Northern Chicago suburbs in case it matters)

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