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While getting some info for a single-line diagram I found this. Service is 277/480V, 1600A, with a number of 200A &1-400A Fusible Switches. The 400A was fused at 225A. OK. The first 200A Switch was fused at 225A . Huh? I really did a double take on this. The remaining 5- 200A were the same way.
Can you see how they managed this? What would/could happen if these units were called upon to "do their duty?"

Electure