Tap rules for manual transfer switch with two sets of lugs?

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rc7288

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A 200A fusible disconnect is the disconnecting means for a building. The fusible disconnect then feeds a 200A manual transfer switch, which allows switching between utility and emergency power.

The manual transfer switch has two sets of lugs. One set to feed the main distribution panel with a 200A main breaker, and the other set to feed a 200A control panel. Do the NEC tap rules (240.21) come into play in this scenario at all? If so, how?
 
rc7288 said:
A 200A fusible disconnect is the disconnecting means for a building. The fusible disconnect then feeds a 200A manual transfer switch, which allows switching between utility and emergency power.

The manual transfer switch has two sets of lugs. One set to feed the main distribution panel with a 200A main breaker, and the other set to feed a 200A control panel. Do the NEC tap rules (240.21) come into play in this scenario at all? If so, how?
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If all the conductors are rated 200 amps or more there are no taps as par as the NEC is concerned.
 
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