User: JDB3, Location: San Antonio, Texas
Asked on: Monday, April 4, 2011 at 12:10 pm EDT
Answered on: Tuesday, May 14, 2024 at 3:43 am EDT
Question: A contractor poured a slab for a "metal horse barn" before I had a chance to do any bonding to the re-bar in the slab. I believe that this will be a violation to Article 547 & 250.52 (A) (2). Any suggestions? Thanks
Possible Violation
Article 547
Requires bonding of all exposed metal components in livestock buildings.
Article 250.52(A)(2)
Requires grounding of all metal conduit in the earth or concrete.
Suggestions
Contact the Contractor
Explain the code requirements and potential consequences of non-compliance. Request that they correct the issue by providing access to the rebar for bonding.
Consult with the AHJ
Inform the local Authority Having Jurisdiction (AHJ) about the situation and seek their guidance on how to resolve the issue. They may require the concrete to be broken up to allow for bonding.
Explore Alternative Bonding Methods
If bonding to the rebar is not feasible, consider alternative bonding methods such as: Installing ground rods and connecting them to the metal components. Using a ground loop system that encircles the perimeter of the barn.
Document the Issue
Take photos or videos of the non-compliant installation and keep a record of all communications and actions taken to address the problem.
Protect Your Interests
If the contractor refuses to correct the issue or the AHJ requires extensive repairs, consider legal options to protect your interests and ensure compliance with electrical codes.
Additional Considerations
Safety
Bonding is essential for protecting personnel and animals from electrical shock.
Insurance
Insurance companies may require compliance with electrical codes as a condition of coverage.
Code Updates: Check if any updates to the National Electrical Code (NEC) have been made since the time of installation that could impact the requirements for bonding. Flag for review