NEC Commercial Electrical Practice Test

The connection of a grounding electrode conductor to a grounding electrode must be what?

1. Watertight

2. Accessible

3. Permanent

4. Corrosion resistant

The correct answer is: Accessible

The connection of a grounding electrode conductor to a grounding electrode must be accessible to allow for examination, maintenance, and testing. This accessibility is crucial for ensuring that the grounding system is functional and effective in providing protection against electrical faults or lightning strikes. Accessibility means that the connection should be located in a place where it can be easily reached without the need for special tools or extensive disassembly, thereby enabling personnel to perform inspections and make any necessary repairs or adjustments. While the other characteristics listed – such as being watertight, permanent, and corrosion-resistant – are important for various aspects of electrical installations, accessibility specifically addresses the practical aspect of being able to access the connection for ongoing safety and compliance checks. This requirement aligns with safety standards and is essential for maintaining an effective grounding system over time.