Final answer:
The IRC limits the electrical services to 120-volt, 0 to 400-ampere, single-phase systems for residential properties.
Step-by-step explanation:
Electrical services within the scope of the International Residential Code (IRC) are limited to 120-volt, 0 to 400-ampere, single-phase systems. The standard household voltage in the United States is 120 volts, with a frequency of 60 Hz. Circuit breakers typically range from 10 to 30 amps for specific circuits in a home, with whole home systems generally having a capacity of 100 or 200 amps. It's important to note that for safety and compliance with the IRC, continuous use is recommended at 80% of the maximum rated capacity of the circuit which is a standard electrical safety guideline to prevent overloading the system.