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Thanks for the kind words @SparkyBill 👍  we're happy to have you in our online program.

My pleasure. I should clarify the previous statement that B, C, and D NEMA design motors are permitted to be fed with 75 C rated conductors at the 75 C rated ampacity even if the circuit is rated for 100A or less. In other words, you do not have to size the 75 C conductor based on the 60 C...

I would just print the four pages that were updated (and maybe the cover where it shows the updated version number) 👍

If the equipment is not specifically rated for 90 C (lugs, insulation, terminations, breaker etc), you cannot feed it with a 90 C rated conductor based on the 90 C ampacity value. The equipment will exceed its temperature ratings well before the 90 C conductor will.  While it is fairly common...

Exactly. B, C, and D NEMA design motors are permitted to be fed with 75 C rated conductors even if the circuit is rated for 100A or less.

Here are the four corrections I've identified so far: Page 23 - the lighting flux (Φ) formula was changed to have two Intensity (I) variables instead of one: Page 24 - Nadir Lighting formula "X" was changed to "•". This was likely to avoid confusion from examinees mistaking "X" as a variable...

My pleasure.

You can access most of these for free on nfpa.org but it is non searchable and you cannot highlight the text. 

It is pretty fair to assume that Routh Hurwitz, Root Locus, and State Variables will be included in control systems and tested on the FE exam. If you're looking for help for these three specifically, we've got how to videos dedicated to each of these located in Chapter 12 - Control Systems of...

According to the FE exam specifications, there are approximately 8 to 12 questions on digital systems, making this the largest subject on the FE exam by the total number of questions! This means that how well you do on digital systems can easily be the difference in passing or failing the FE...

If anyone is looking for an explanation of where this formula comes from, including the "short cut" version, here is a nice explainer video: If you'd like to dig deeper, here is the article the first video is from, there is a second example video with an actual practice problem that is...

Hi @SparkyBill Take a look at the live class recording for voltage drop from last semester and it will clear this up for you and demystify the handbook formula. It's really just using the nec effective impedance approach for approximating voltage drop using magnitudes only. If you have any...

Keep your head up everyone! Don't forget to take a break when you need to. I highly recommend taking advantage of the extra month or two you have before your CBT exam date compared to the October exam date to deep dive on areas you are most uncomfortable with.

FYI for anyone that hasn't already seen it: First Impressions of the New NCEES® Electrical Power Reference Handbook for the Computer Based Testing (CBT) Exam.

I'm assuming this is the NCEES practice problem where there are two conductors run in parallel because this question comes up often.  What is the equivalent resistance of two identical resistors in parallel? if: R1 = R2 = R Then: Req = R//R Req = (R*R)/(R+R) Req = (R*R)/(2R) Req = R/2 The...

The problem is not asking for the output voltage of the half wave rectifier. It's asking for the reverse minimum voltage rating of the diode. The voltage rating of the diode is how much voltage it can be subjected to without failing or becoming damaged. You have to calculate what the maximum...

The NEC handbook edition gives some good examples using the magnitude approximation method only (by subtracting magnitudes instead of complex numbers). 

This is incorrect. Voltage drop percent by definition in the ratio of the amount dropped across the conductor to the amount supplied by the source. 

I would love to. Unfortunately, we are currently in the middle of this semester's live class program while trying to incorporate a lot of changes for the new CBT version of the power PE exam has me really putting in the hours. I've never played before, I'd be happy to take a rain check for...

Not a bad book at all for the price but it is not as in depth as the Linden handbook.