How many ungrounded conductors are typically present in a residential cable assembly delivering 120/240 Volt services?

In a residential cable assembly that delivers 120/240 Volt services, there are typically two ungrounded conductors. This configuration allows for the dual voltage levels that are commonly used in residential settings.

One of these conductors carries the voltage for 120 volts, which is primarily used for standard household appliances and lighting. The other ungrounded conductor provides the second phase for 240 volts, allowing for larger appliances such as dryers or ovens that require more power.

In this setup, the presence of two ungrounded conductors facilitates the distribution of the two different voltage levels easily and efficiently.

Understanding this electrical configuration is important as it influences how electrical systems are designed, ensuring that they meet the required voltage standards for various applications within a home.