Which phase must have the higher voltage to ground in a 3-phase, 4-wire, delta-connected system?

In a 3-phase, 4-wire, delta-connected system, it is important to understand how the voltage to ground relates to the configuration of the system. In such a setup, the three phases are connected in a triangle or delta formation, and typically do not have a neutral wire directly connected to the system phases.

While all three phases (A, B, and C) are at different points in their voltage cycles, they should ideally have balanced voltages when the system is functioning correctly. However, when considering the voltage to ground, it is crucial to remember that in a delta configuration, the phases do not have a direct reference to ground unless a grounding method is employed.

In a typical scenario for this type of system, if the voltage to ground is measured from any phase to a grounded neutral point, it can show varying readings depending on system imbalance or faults. Therefore, options representing specific phases suggest an imbalance, characteristic of the conditions being examined in the question.

Choosing phase B indicates it can be considered as the reference with the highest voltage to ground under certain conditions. This is relevant in situations where grounding isn't symmetrical, or there may be load characteristics affecting one phase more than others.

Thus, the distinction in voltage to ground, particularly