Article 680.26(B)(2) Equipotential Bonding of Perimeter Surfaces for a Spa on A deck

This section requires that all perimeter surfaces within 5 feet of a spa on a deck be bonded together and connected to a common bonding grid. This can be achieved by using items such as bonding straps, copper wire, or metal conduit.

Best Practices for Satisfying Article 680.26(B)(2)1. Identify Perimeter Surfaces

Determine all surfaces within 5 feet of the spa, including the deck, steps, railings, and other structures.

2. Establish a Common Bonding Grid

Install a metal grounding rod or plate at least 8 feet long into the earth near the spa. Connect the grounding rod to a grounding busbar or conduit that will serve as the common bonding grid.

3. Bond Perimeter Surfaces

Use bonding straps, copper wire (at least 8 AWG), or metal conduit to connect all perimeter surfaces to the common bonding grid. Ensure that all connections are tight and secure.

4. Bond Spa Equipment

Make sure all electrical equipment associated with the spa (e.g., pumps, heaters) is bonded to the common bonding grid.

5. Test the Bonding System

Use a continuity tester to verify that all connections are properly bonded and that the resistance between all surfaces is less than 0.1 ohms.

Additional Considerations for Spas on Decks



Deck Supports

The decking supports should be made of a non-conductive material, such as pressure-treated lumber or composite decking.

Conductive Water

Be aware that the space below the deck may be damp or wet, which can create a conductive environment. Take additional precautions to ensure proper bonding in this area.

Access to Bonding System: Provide easy access to the bonding system for inspection and maintenance.By following these best practices, you can effectively satisfy the requirements of Article 680.26(B)(2) and ensure the safety of your spa installation. Flag for review