I recently took my level 2 along with a few other guys where I work. Not everybody passed but here is what was on our tests. Some of this may already be posted in other threads but other parts are new:
Test focused mainly on math, transformers, relays
Picture of main tie an asking if a switch will open when tie opens
Relay numbers, what does this device do?
Basic ANSI device numbers (know 21,27,32,50,51,52,59,87)
One or two questions on mechanical relays operation such as “pick up current was low, what setting needs to be
moved” etc.
Differential relaying theory (basics)
Know Shading coils
Not much on safety, two confined space questions
What defines a confined space?
Can someone attend more than two manholes?
“When is it acceptable to wear cotton clothing?” In regards to voltage levels
Electrical rubber glove classes (max use voltage) and inspection dates
One guy said no questions on 1910.137
Know PCB reporting requirements - 10 pounds
protective ground sizes and functionality
LOTO process
How much torque at this horsepower?
Basics of thermography (emissivity etc)
Looking at infrared image, no temp points, just scale. Approximate the temperature in the area indicated.
600a real power with theta angle, what is the reactive power?
Know how to find kVARs
Know how to find power factor
Know your power triangle in general
CT polarity and gf scenarios, what is the secondary current, is this wired properly
Bar type ct picture in a switchgear with an arrow asking what is this
A few pictures with items like a CT being pointed to and asking what it is
Circuit breaker one-line symbols
Where to test on a switch for contact resistance, point 1 and 9
Basic kirchhoff law, proportional calcs
What color sticker for acceptance? white
Diagram with open contact on top and closed contact on bottom, type c or class c
Voltage drop across resistors in series and parallel
Total resistance calculations in very basic circuits
What is the total inductance? Series and parallel
Know contact resistance and how it works
Ductor readings - which one is acceptable?
Generator testing
One line drawings in general
General knowledge of power factor testing
Ground testing (know the values in ohms)
Understand grounding principles
One or two questions on fiber optics
Know the value (15%) in which fuses fail
Read your MTS and ATS! Quite a few questions lifted straight from those two.
Know medium voltage testing requirements
NEMA enclosure ratings
Familiarize yourself with anti pump characteristics and blow out coils
% allowable for transformer winding resistance
What properties transformer oil shows when it has arced / broke down?
Know the uses of meters and the leads associated
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