In a 240v-120v Delta system, what is the voltage of the high leg?

Prepare for the CWEA Electrical and Instrumentation Grade 2 Test. Strengthen your skills with interactive questions and detailed explanations. Ensure your success!

In a 240V-120V Delta system, the "high leg" refers to the voltage measured between one of the phases and the neutral point. In this configuration, the voltages between the phases are 240V, while the voltage between one phase and neutral (the high leg) is typically 208V. This is derived from the fact that the square root of 3 (approximately 1.732) is involved in the calculation for the phase-to-phase and phase-to-neutral voltages in a Delta system.

Specifically, in a Delta system with a 240V line-to-line voltage, the voltage from the high leg to neutral is 240V multiplied by the square root of 3 and then adjusted (grounded) to yield about 208V. Therefore, the correct answer is 208V, as it reflects the actual voltage available from the high leg to neutral in a 240V-120V Delta configuration.

This makes 208V the correct choice as it accurately represents the voltage level of the high leg in this system.

Subscribe

Get the latest from Examzify

You can unsubscribe at any time. Read our privacy policy