What is the minimum service requirement in amps for a single residential dwelling unit?

The minimum service requirement in amps for a single residential dwelling unit is 100 amps. This standard is based on the National Electrical Code (NEC) guidelines, which are designed to ensure adequate electrical supply for typical residential needs. Over the years, as household electrical demands have increased due to the proliferation of electrical appliances, electronics, and HVAC systems, the 100-amp service provision has become the accepted minimum for new residential construction.

This level of service is generally sufficient to support the electrical needs of average households while allowing for some expansion, such as future upgrades or additional devices. It is important to note that while lower amperage services were common in older homes, the trend towards higher service capacities reflects modern living standards and safety considerations.

Therefore, 100 amps provides a reliable baseline to ensure safety, functionality, and future adaptability in residential electrical systems.