In a scenario with all loads operating, what is the current flowing through BØ in the main breaker?

To determine the current flowing through the B phase of the main breaker with all loads operating, it is essential to understand how to calculate the current in a balanced three-phase system.

When all loads are operating, the current in each phase can be assumed to be roughly equal in a balanced system. If the total current load is evenly distributed, you would typically divide the total current by three to evaluate the current in each phase. However, the given answer, which states that BØ carries 167 amps, implies that the system may not be perfectly balanced or that there are specific loads affecting this phase differently.

In practical scenarios, factors such as diversity in loads, different power factors, or imbalances potentially lead to variations in the current across the phases. Therefore, the 167 amps indicates that there may be a particular condition or specific load demand that justifies this figure, potentially indicating an unbalanced load condition or a calculated current based on specific requirements in the scenario outlined.

Understanding how the total load affects each phase is crucial for electrical design and troubleshooting, making it clear why 167 amps would represent the current drawn through the B phase.