Code Quiz: Disconnecting Means for Fixed Industrial Process Heating Equipment

Fill in the blank.

For fixed industrial process heating equipment without supplementary overcurrent protection and no motor rated greater than 1/8 HP, the branch-circuit switch or circuit breaker shall be permitted to serve as the disconnecting means where the switch or circuit breaker is _______ from the heater or is ________ in accordance with Sec. 110.25.

A) detached / rated
B) away / listed
C) within sight / lockable
D) none of the above

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Answer: C

As outlined in Sec. 425.19(B)(1) of the 2017 NEC, “For fixed industrial process heating equipment without a motor rated over 1/8 HP, the branch-circuit switch or circuit breaker shall be permitted to serve as the disconnecting means where the switch or circuit breaker is within sight from the heater or is lockable in accordance with 110.25.”

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].