Code Quiz: Short-Circuit Current Rating of Industrial Control Panel

Sept. 7, 2017
NEC Rules for Short-Circuit Current Rating of Industrial Control Panel

Fill in the blank. An industrial control panel shall not be installed where the available short-circuit current exceeds the ____________________ of the industrial control panel in accordance with Sec. 409.110(4).

A) overcurrent rating
B) fixed trip rating
C) adjustable trip setting
D) short-circuit current rating

Scroll Down to See the Answer

Answer: D

As outlined in a portion of Sec. 409.22(A), “An industrial control panel shall not be installed where the available short-circuit current exceeds its short-circuit current rating as marked in accordance with 409.110(4).”

Owen is the owner and president of National Code Seminars and the holder of master electrician certifications in 46 states. He can be reached at [email protected].

About the Author

Steven Owen

Voice your opinion!

To join the conversation, and become an exclusive member of EC&M, create an account today!

Sponsored Recommendations

Electrical Conduit Comparison Chart

CHAMPION FIBERGLASS electrical conduit is a lightweight, durable option that provides lasting savings when compared to other materials. Compare electrical conduit types including...

Fiberglass Electrical Conduit Chemical Resistance Chart

This information is provided solely as a guide since it is impossible to anticipate all individual site conditions. For specific applications which are not covered in this guide...

Considerations for Direct Burial Conduit

Installation type plays a key role in the type of conduit selected for electrical systems in industrial construction projects. Above ground, below ground, direct buried, encased...

How to Calculate Labor Costs

Most important to accurately estimating labor costs is knowing the approximate hours required for project completion. Learn how to calculate electrical labor cost.