For a star connected load, what is the relationship between line current (Il) and phase current (Ip)?

• A. Il = 2Ip
• B. Il = Ip
• C. Il = √3 x Ip
• D. Il = 1/Ip

Answer: (B)

For a star connected load, the line current and phase current have a direct relationship. In a star configuration, each phase of the load is connected to the corresponding line conductor. Therefore, the current flowing through each line conductor (line current) is equal to the current flowing through each load component (phase current). This means that the line current is the same as the phase current, establishing a one-to-one relationship.

This equality simplifies analysis in three-phase systems and helps in calculating circuit parameters efficiently. The scenario in question confirms that in a star connection, each line carries the same current as its corresponding phase. Thus, understanding this concept is crucial for working with star connected systems in electrical engineering.