Mike Dolt Enterprises
Mike Dolt Enterprises
User: rwacheson, Location: Florida
Asked on: Friday, April 1, 2011 at 9:52 am EDT
Answered on: Tuesday, May 14, 2024 at 3:36 am EDT
Question: I do bonding/grounding training for CATV folks, and in a recent class, I was told of cities in the US who build single family/duplex homes not to the NEC, but to the International Residential Code, and installers were having a difficult time finding a permissible bond wire attachment point.Can anyone give me a little backround and point me where I might go to find out more? The 2008 NEC has the "Intersystem Bonding Connection" and other places to bond, but the IRC?One thing about doing classes, you always, always, learn something.Many thanks.
Background
The National Electrical Code (NEC) is a set of regulations for the safe installation and maintenance of electrical systems in the United States. It is published by the National Fire Protection Association (NFPA).The International Residential Code (IRC) is a set of regulations for the construction of single-family and two-family dwellings in the United States. It is published by the International Code Council (ICC).
Bonding in the IRC
The IRC does not explicitly require bonding of electrical systems. However, Section R304.7 of the 2018 IRC states that "Where an electrical system is connected to an external bonding and grounding electrode system, the electrical system shall be bonded to the grounding electrode system in accordance with the NEC."
Bond Wire Attachment Point
The IRC does not specify a location for the attachment of a bonding wire. However, the following locations are generally considered to be acceptable: The main water pipe where it enters the building The gas pipe where it enters the building The grounding electrode system, such as a ground rod or Ufer ground
Finding More Information
To find out more about bonding in residential construction, you can refer to the following resources: [2018 IRC Section R304](https://codes.iccsafe.org/content/IRC2018/chapter-3-building-planning) [NEC Article 250](https://www.nfpa.org/codes-and-standards/all-codes-and-standards/list-of-codes-and-standards/detail?code=70) [ICC Technical Bulletin 12](https://codes.iccsafe.org/content/IRC2018/technical-bulletin-12) [Bonding and Grounding in Residential Construction](https://www.ecmweb.com/codes-standards/article/21439052/bonding-and-grounding-in-residential-construction)
Additional Notes: In some jurisdictions, local building codes may have additional requirements for bonding in residential construction.* It is important to consult with local authorities to ensure that all applicable code requirements are met. Flag for review