Code Quiz: Junction Box Requirements

Fill in the blank with the appropriate answer.

When installing junction boxes in underfloor raceways, the junction boxes shall be ______ the floor grade and _____ to prevent the free entrance of water or concrete.

1. secured to / nonmetallic
2. leveled to / sealed
3. within / coated

Find the Answer

Answer: B

As outlined in Sec. 390.13 of the 2014 NEC, when installing junction boxes in underfloor raceways, the junction boxes shall be leveled to the floor grade and sealed to prevent the free entrance of water or concrete.

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].