What service amp capacity was typical for homes built between 1930 and 1950?

The typical service amp capacity for homes built between 1930 and 1950 was 60 amps. During this time, the electrical demands of households were relatively low compared to modern standards, and the electrical systems were designed to accommodate basic needs such as lighting and a few appliances.

As technology evolved and households began using more electrical devices—such as refrigerators, washing machines, and eventually larger appliances—the demand for electricity increased significantly. This growing demand led to upgrades in service capacity, moving to 100 amps by the late 1950s and eventually to 200 amps in newer constructions.

Understanding the typical service capacity during this period helps in assessing older homes, planning renovations, or performing safety inspections. It also provides context for why many older homes require electrical system upgrades to safely handle modern electrical loads.