Unlisted Optical Fiber Cables Entering Buildings

Optical fiber cables are not required to be listed and marked where the length of the cable within the building, measured from its point of entrance, does not exceed _____ and the cable enters the building from the outside and is terminated in an enclosure.

a) 25 ft
b) 30 ft
c) 50 ft
d) 100 ft

See answer and applicable Code reference

The correct answer is: c) 50 ft

Article 770 of the NEC applies to the installation of optical fiber ca

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