Code Quiz: Protection of Wiring for Audio Type Equipment

April 21, 2016
NEC requirements for protecting audio signal processing, amplification, and reproduction equipment

This question is related to grounding for audio signal processing, amplification, and reproduction equipment, in accordance with Art. 640.

Fill in the blanks with the appropriate answers.

Where accessible to the public, flexible cords and cables laid or run on the ground or on the floor shall be covered with _________.  The cover requirements of Sec. 300.5 ________ apply to wiring protected by burial.

A) wood / never

B) plastic / always

C) concrete / shall

D) nonconductive mats / shall not

Find the Answer

Answer: D

As outlined in the first sentence of Sec. 640.45, “Where accessible to the public, flexible cords and cables laid or run on the ground or on the floor shall be covered with approved nonconductive mats.” As noted in the last sentence of this same section of the NEC, “The cover requirements of 300.5 shall not apply to wiring protected by burial.”

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.