When load taps are made in the tie circuit between transformers, the current-carrying capacity shall not be more than a stipulated percentage (200%) of the rated secondary current of the largest capacity transformer connected to the secondary tie.

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The National Electrical Code (NEC) does not specify a 200% limit for the current-carrying capacity of load taps in the tie circuit between transformers. The actual requirements for transformer connections, including taps, are based on ensuring the system's safety and functionality without a specific percentage limit like 200% of the rated secondary current. The NEC and other standards focus on proper sizing based on load calculations, protection, and other electrical parameters.

When Load Taps Are Made in the Tie Circuit Between