Journeyman Electrician Practice Exam 2025 - Free Electrician Practice Questions and Study Guide

Question: 1 / 400

What is the minimum size equipment grounding conductor required for a 50-ampere rated circuit?

6 AWG

8 AWG

10 AWG

For a 50-ampere rated circuit, the minimum size equipment grounding conductor is determined by the National Electrical Code (NEC). According to NEC Table 250.122, the appropriate size for equipment grounding conductors varies depending on the rating of the overcurrent device protecting the circuit.

For a circuit with a 50-ampere breaker, the minimum size equipment grounding conductor is specified as 10 AWG when using copper conductors. This conductor must be adequately sized to ensure safety and provide effective grounding, which protects against electrical shock and fire hazards should a fault occur.

In this context, selecting a grounding conductor that is too small may not adequately carry the fault current, leading to the potential for equipment damage, fire, or electric shock. Therefore, understanding the correct sizing according to NEC guidelines is essential for safe electrical installations.

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12 AWG

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