A residential building is being constructed with a 200A main service. Which type of grounding electrode system is required for this service according to the 2024 IRC?
- Single earth rod
- BTwo earth rods
- CGround ring
- DNone, as the service is less than 200A
Exam tip
Always check the specific requirements for grounding electrode systems in the IRC.
Why A is correct
According to 2024 International Residential Code 250.66(A), a single earth rod is required for a 200A main service. Two earth rods (option b) and a ground ring (option c) are not specified for this application. The code does not allow for the grounding electrode system to be omitted (option d) for services less than 200A.