Available Fault Current on the Plans. Exercise 2.

Refer to the image to answer the question.
Click to Enlarge
Refer to the image to answer the question.

The image shows a typical one-line diagram for a new construction project that is supplied by a 120/208V, 3-phase, 4-wire, WYE connected 800-amp electrical service. There are five electric panels, a standby generator and an automatic transfer switch (ATS).

On the one-line diagram, each panelboard as well as the ATS has a fault point designation which is explained in detail on the chart to the right, which is also part of the plans. In the event that the electrician is unsure about what type of wiring method to install, the chart to the right will provide additional details.

Did You Like This? Let Us Know With A Like! Thanks!

Available Fault Current on the Plans. Exercise 2.

Below is a Real Question from our Electrical Continuing Education Courses for Electrical License Renewal:

Refer to the image:

Which of the following is true?

A: The “C” value used in the fault current calculation for panel E1 is 6044.
B: The feeder supplying panel E1 is aluminum.
C: The conduit to panel E1 is not magnetic.
D: The conduit to panel E1 is ferrous metal (magnetic).
Please register or sign in for electrical continuing education courses.

If you were already signed in, your session probably expired, please sign back in.