Code Quiz of Day

Guarding of Live Parts

June 9, 2015

Entrances to rooms and other guarded locations containing exposed live parts shall be marked with conspicuous ______ forbidding unqualified persons to enter.

Mike Holt

Entrances to rooms and other guarded locations containing exposed live parts shall be marked with conspicuous ______ forbidding unqualified persons to enter.

a) warning signs
b) alarms
c) a or b
d) neither a or b

See answer and applicable Code reference

The correct answer is: a) warning signs

Article 110 covers general requirements for electrical installations. As noted in Sec. 110.27(C), "Entrance to rooms and other guarded locations that contain exposed live parts shall be marked with conspicuous warning signs forbidding unqualified persons to enter. The marking shall meet the requirements in 110.21(B)."

About the Author

Mike Holt

Mike Holt is the owner of Mike Holt Enterprises (www.MikeHolt.com), one of the largest electrical publishers in the United States. He earned a master's degree in the Business Administration Program (MBA) from the University of Miami. He earned his reputation as a National Electrical Code (NEC) expert by working his way up through the electrical trade. Formally a construction editor for two different trade publications, Mike started his career as an apprentice electrician and eventually became a master electrician, an electrical inspector, a contractor, and an educator. Mike has taught more than 1,000 classes on 30 different electrical-related subjects — ranging from alarm installations to exam preparation and voltage drop calculations. He continues to produce seminars, videos, books, and online training for the trade as well as contribute monthly Code content to EC&M magazine.