March 5, 2020

Code Question of the Month

For AC adjustable voltage, variable torque drive motors, the ampacity of conductors, or ampere ratings of switches, circuit breakers, or fuses, and ground-fault protection shall be based on the operating current marked on the nameplate.  If the current does not appear on the nameplate, the ampacity determination shall be based on _____% of the values given in tables 430.249 and 430.250.
a. 80%    b.  100%     c.  125%     d.  150%      e.  is not based on values given in tables 430.249 and 430.250
Answer: d       REF: 430.6(C)  of the 2017 NEC