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Good morning everyone. I recently just passed the PE exam, and subsequently submitted my PE application. I recently received an e-mail stating I have to appear in front of the board because of a misdemeanor (trespassing) that occurred about 2 years ago. Without going to deep into the story--I...

Can anyone explain how to do Graffeo example 49 using MVA method. The problem reads: The following system was operating at no load and rated voltage, when suddenly a tree fell causing a single line to ground fault at bus 2. Find the fault current.  Parameters: Generators: 200MVA, 13.8KV, X"=...

Hello. Can someone explain to me the meaning of Article 240.21 (B)(1-4) in the NEC. The wording confuses me a bit, and I don't understand the rule as applied. Thank you in advance.