When installing communication wires and cables in cable routing assemblies, horizontal supports for cable routing assemblies shall be installed at intervals not to exceed _____ at each end or joint unless listed otherwise. In no case shall the distance between supports exceed _____.
A) 3 ft/6 ft
B) 3 ft/10 ft
C) 4½ ft/8 ft
D) 5 ft/10 ft
Find the Answer
Answer: B
As per Sec. 800.110(C)(1) of the 2014 NEC, when installing communication wires and cables in cable routing assemblies, horizontal supports shall be installed at intervals not to exceed 3 ft at each end or joint unless listed otherwise. In no case shall the distance between supports exceed 10 ft.
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].