In order to measure the current from the utility, the CT arrow should face which direction?

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Multiple Choice

In order to measure the current from the utility, the CT arrow should face which direction?

Explanation:
Understanding CT polarity is about matching the arrow on the current transformer to the actual direction of current flow. The arrow indicates the direction of positive secondary current when the primary conductor carries current in that same direction. For measuring the current being supplied by the utility into the system, the current flows from the utility toward the loads. Therefore, orient the CT so its arrow points away from the utility and toward the loads. This alignment ensures the secondary current is in the correct phase relative to the primary, giving accurate readings for metering and protection. If the arrow pointed toward the utility, the polarity would be reversed and readings could be incorrect or signs inverted.

Understanding CT polarity is about matching the arrow on the current transformer to the actual direction of current flow. The arrow indicates the direction of positive secondary current when the primary conductor carries current in that same direction. For measuring the current being supplied by the utility into the system, the current flows from the utility toward the loads. Therefore, orient the CT so its arrow points away from the utility and toward the loads. This alignment ensures the secondary current is in the correct phase relative to the primary, giving accurate readings for metering and protection. If the arrow pointed toward the utility, the polarity would be reversed and readings could be incorrect or signs inverted.

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