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I used Graffeo - studied  for two weeks. Walked in the exam with that and the NCEES handbook and got a 90. TX gives scores. Would not recommend bringing too many specific protection references into the exam. The art science of protective relaying is a good book, may want to check out Buff Book™—...

Hey All, Sorry if this was covered elsewhere, couldn't find a specific answer. Want to know the rule of thumb for choosing an infinite source (on the PRIMARY) based on XFMR size. Secondary side I know the calc. For example, if I have a 750 kVA XFMR according to a SKM model I need a 15000 MVA...

Thanks for the help guys. I was able to get it figured it out. We were replacing this old thing with a new SEL-351.

Passed with score of 90. Electrical Power.  Studying = cram for 2 weeks. 

Hello, I am trying to determine the settings on an old GE electromechanical relay. There are three settings, pickup, time dial, INST. The time dial and INST values seem fairly straight forward. The pickup values howver show a plate with screws (see attached picture). How are you to determine...