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Topic: Burying 8b boxes in concrete and use of ent in concrete outside

User: johnmike, Location: 3 Hr 2 Min from Winged Horses

Asked on: Friday, March 25, 2011 at 1:44 pm EDT
Answered on: Tuesday, May 14, 2024 at 3:16 am EDT

Question: i AM PRETTY CERTAIN OF THE ANSWERS HERE BUT WANT TO ASK:IS IT IN VIOLATION TO BURY COMPLETELY AN 8B BOX WITH ITS COVER IN THE CONCRETE? COULD SOMEONE PROVIDE ME WITH THE CODE LOCATION. SECONDLY, IS IT LEGAL TO USE ENT IN CONCRETE IN THE OUTSIDE FOR USE OF PUTTING 120V ELECTRICITY IN?

1. Burying 8B Box in Concrete

Yes, it is in violation to completely bury an 8B box with its cover in concrete.

NEC Code Location

314.20(A)(2)"Junction boxes, pull boxes, or device enclosures shall not be buried in plaster or concrete."

2. Using ENT in Concrete for 120V Electricity


Yes, it is legal to use ENT (Electrical Nonmetallic Tubing) in concrete for use of putting 120V electricity outdoors.

NEC Code Location: 351.26(A)"ENT may be used outdoors in wet locations, provided that the installation complies with all applicable provisions of Article 351, including the requirement for suitable raintight connections." Flag for review

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