Recent content by EEmarcus

Thanks Flyer PE!!! I get the PU Method now. In my error above they simplified the problem by directly giving us the SC of the system as 40MVA . Therefore the TX SC is (25MVA) and the system SC is (40MVA). It all works out now. Couldn't find this problem using the search function.

I am attempting to solve this problem by the MVA method where... SC TX= 1MVA/4%= 25MVA SC Sys= 40MVA/4%= 1000MVA SC Tot= (In Parallel) so answer is about 24.4MVA Ssc= 24.4MVA/ (sqrt3*480)= 29,348A. ????? NCEES Answer 18,500.

For this problem how is the percent z value calculated for the 40MVA system (Assuming the 1MVA Base)? The problem has .025 for the system impedance.

Kenny did you take the exam in Illinois?

Many thanks to both of you . The 2011 NEC does not have the Table 110.20.

Does anyone know which table/page are the Nema Enclosure types found in the NEC? Or does it even exist within the NEC?

Is the impedance of a TX correlated to the applied voltage for the short circuit? On Question 539 TX has 10% impedance & (100/7.2KV) and the factory short circuit test the applied KV to get rated current the answer is 10KV. (100KV * 10%) On complex imaginary TX has 5% impedance &amp...

A friend of mines took the test in OCT 11 (Elec-Pwr) and he informed me that they proctors did not take any 3-Ring Binders from anyone as long as all the papers were bounded. They did take the NCEES practice booklet and Schaum's book from ppl though. Hope that helps. I plan to bring my binder...

I am looking to purchase the full-set (total of 4) of Complex Imaginary Prep Tests for the PE- Power Option. Please reply or send me a PM of what you have for sale. Thanks.

Back to question 2-65 the question asks for load factor. My formula for this is LF=(Avg Load)/(Peak Load). But the answer provided is a formula for capacity factor. CF= (Avg Load for a period)/(Output Capacity of Plant). This is according to my reference book. Aren't these two things...