Wire CB Fuse Sizeing for Transformers?

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muckmail

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I am looking for information on information sizing wire, fuses,
breakers for transfomers. Which NEC tables to use. Something that
is concise and gets to the point. Hopefully a nice public webpage on that
subject.

Any suggestions?
thank you,
 
No easy ansewer

No easy ansewer

Sorry but there is no easy ansewer or all inclusive table for this type of application, because there are so many ways it can be done. Lets start here:

Article 450 Transformers
Article 300 Wiring Methods
Article 240 Overcurrent protection
Article 250 Grounding (everyone's favroite)

I am assuming that this is a distribution transformer somewhere in the system and not a MV transformer of liquid filled, substation transformer. There are alot of considerations you hae to take into account prior to selecting overcurrent protection, and feeder sizes, not to mention selective coordination...I'll leave it at that.
 
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