What electrical service is every dwelling required to have according to the IPMC?

According to the International Property Maintenance Code (IPMC), every dwelling is required to have a reliable electrical service that meets basic residential needs. The requirement for a 120/240-volt single-phase service reflects the standard voltage levels used in residential buildings. This configuration provides sufficient power for most household electrical systems, appliances, and lighting while ensuring safety and efficiency.

A 120/240-volt single-phase service is ideal for providing a balanced load across circuits and accommodating a wide range of electrical devices, including essential appliances such as refrigerators, ovens, and heating systems. Additionally, this type of service is commonly used throughout the residential sector, making it a practical standard for housing inspections and maintenance.

The other options presented, such as higher voltages or different phases, are not typically required for standard residential units. They are more suited for industrial or specialized applications and would not meet the IPMC's intent to ensure a basic, functional electrical service for everyday residential usage.