Which of the following is the minimum bonding jumper size for neon tubing outline lighting circuit protected at 30 amperes?

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Multiple Choice

Which of the following is the minimum bonding jumper size for neon tubing outline lighting circuit protected at 30 amperes?

Explanation:
The sizing of the bonding jumper (equipment grounding conductor) is based on the overcurrent device protecting the circuit. For a circuit protected at 30 amperes, the NEC requires a minimum bonding jumper of 10 AWG copper. This size provides a sufficient low-impedance path for fault current so the protective device clears quickly, reducing risk of shock or equipment damage. Using a larger size like 8 AWG is allowed but not required, while smaller sizes such as 12 AWG or 14 AWG would not meet the 30 A requirement.

The sizing of the bonding jumper (equipment grounding conductor) is based on the overcurrent device protecting the circuit. For a circuit protected at 30 amperes, the NEC requires a minimum bonding jumper of 10 AWG copper. This size provides a sufficient low-impedance path for fault current so the protective device clears quickly, reducing risk of shock or equipment damage. Using a larger size like 8 AWG is allowed but not required, while smaller sizes such as 12 AWG or 14 AWG would not meet the 30 A requirement.

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