Code Question of the Month – November 2021
A grounded conductor is run in four parallel conduits with 4 sets of 250 kcmil service conductors to a 1000-amp 277/480-volt, 3-ph, 4-w switchboard. The minimum size of the neutral in each conduit is ___ AWG or kcmil. Select one: a. 4 b. 1/0 c. 2/0 d. 3/0 e. 250 The answer is b. 1/0 […]




