Below are sample questions that you will find on the self-paced exam prep course.  When you purchase the course, you will have the ability to select the answer that you think is correct and check it.  You will immediately find out if you are wrong or right.  You will receive further guidance on each question as to how to solve the problem correctly and where it is found in the National Electrical Code or MN State Rules.  

SECTION 1
How much current would be expected to flow through a 3Ø, 208-V, 8-kW electric heater?

SECTION 2
A single-phase transformer with a 480-volt primary and a 120/240-volt secondary has the loads connected to the secondary as shown below: What is the primary circuit current?

  (a)   8 A

  (b)   16 A

  (c)   19 A

  (d)   24 A


SECTION 3

A 3Ø, 480-volt feeder circuit (100 A panelboard) uses 1/0 AWG aluminum THW conductors and a length in one direction of 550′. What is the Code-recommended maximum allowable current that this conductor can carry? (Use K = 21.4)

  (a)   100 A

  (b)   75 A

  (c)   57 A

  (d)   50 A

SECTION 4
What standard size cable tray is needed to accommodate the following MC cables? 


Three # 1 AWG / 3 MC cables with diameter = 0.9”


Five #2 AWG / 3 MC cables with diameter = 0.8”