Maximum Length of Feeder Tap Conductor in High-Bay Building

Part II of Article 240 covers the location requirements of overcurrent protection devices.

July 15, 2014

The maximum length of a feeder tap conductor in a high-bay manufacturing building over 35 ft high shall be _____.

a) 15 ft
b) 20 ft
c) 50 ft
d) 100 ft

See answer and applicable Code reference

The correct answer is: d) 100 ft

Part II of Article 240 covers the location requirements of overcurrent protection devices. As noted in 240.21(B)(4)(2), "Where the feeder is in a high bay manufacturing building over 35 ft high at walls and the installation complies with all of the following conditions:" (conditions are outlined in nine individual entries) "the tap conductors are not over 25 ft long horizontally and not over 100 ft in total length."