A 120 Volt Power Supply for a residential Electrical Circuit is taken from which of the following?

The correct choice is based on the understanding of how residential electrical circuits are set up. A 120 Volt power supply in a typical residential setting is derived from the load side of one branch circuit breaker in the electrical panel.

When a circuit breaker is installed, it connects to the electrical supply from the main service panel. The load side of the breaker delivers power to the light fixtures, outlets, or other devices connected to that specific branch circuit. This is where the live (hot) power is found, which completes the circuit used for household appliances and devices.

The other options do not correctly represent how a standard 120 Volt power supply is accessed. The hot side of the main breaker provides the source voltage for all circuits but does not directly supply 120 volts for individual circuits. The neutral bar in the panel is used for returning current and is not the source of power. Finally, the ground wire connection is meant for safety and does not supply voltage. Understanding these connections is fundamental for ensuring proper circuit wiring and safety in household electrical systems.