Code Quiz: Equipment Door Stops and Cover Plates

May 17, 2018
Requirements regarding hinged doors on electrical equipment over 1,000V.

For electrical equipment operating over 1,000V nominal, external hinged doors or covers shall be provided with _______ to hold them in _______ position?

A) hooks / upright
B) a key / locked
C) stops / open
D) a rubber insulating device / closed

See the answer below.

Answer: C

Section 490.38 of the 2017 NEC covers the requirements for door stops and cover plates. As noted in the first sentence of this Section, “External hinged doors or covers shall be provided with stops to hold them in the open position.”

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...

Don't Let Burn-Through Threaten Another Data Center or Utility Project

Get the No Burn-Through Elbow eGuide to learn many reasons why Champion Fiberglass elbows will enhance your data center and utility projects today.

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.