Number of feeder cables allowed to terminate on transformer secondary

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mull982

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Another transformer secondary related question:

Is there a limit to the number of feeders that is allowed to terminate on the secondary of a transformer. Lets say that each feeder is terminating in a single OCPD, or device somewhere. Is there a section in the NEC that limits this number?

For multiple feeders to they all terminate on the transformer secondary bushing, or must you have some sort of bus arrangement?
 

david luchini

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I think that would depend on whether you are protecting the transformer primary&secondary, or primary only.

If you are using primary & secondary transformer protection, I think T450.3(B) Note 2, would limit you to six.

If you are protecting the transformer primary only, I think 240.21(C) allows you to as many feeders from the secondary as you want. 240.21(C) says "....or each set of conductors feeding separate loads..."
 
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