When retrofitting signs equipped with tubular light-emitting diode lamps powered by the existing sign sockets, the sign shall include a label ______________.

A) alerting service personnel that the sign has be modified
B) that meets the requirements of Sec. 110.21(B)
C) to include a warning not to install fluorescent lamps, and is visible during relamping
D) All of the above

See the answer below.

Answer: D

There’s a new requirement in Sec. 600.4(B) of the 2017 NEC. It notes the following: When retrofitting signs equipped with tubular light-emitting diode lamps powered by the existing sign sockets, the sign shall include a label alerting service personnel that the sign has be modified, meets the requirements of Sec. 110.21(B), includes a warning not to install fluorescent lamps, and is visible during relamping.

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].