When performing system bonding, what is the minimum conductor size?

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Multiple Choice

When performing system bonding, what is the minimum conductor size?

Explanation:
Bonding is the practice of tying metallic parts of the electrical system together to keep them at the same electrical potential and provide a low-impedance path for fault current. The conductor used for system bonding must be sized to carry the maximum fault current without overheating, so the protective device can trip promptly. In standard practice for this topic, the minimum conductor size is 6 AWG copper. Smaller sizes would typically be undersized for fault conditions, while a larger size would exceed the minimum. So, 6 AWG copper is the correct minimum.

Bonding is the practice of tying metallic parts of the electrical system together to keep them at the same electrical potential and provide a low-impedance path for fault current. The conductor used for system bonding must be sized to carry the maximum fault current without overheating, so the protective device can trip promptly. In standard practice for this topic, the minimum conductor size is 6 AWG copper. Smaller sizes would typically be undersized for fault conditions, while a larger size would exceed the minimum. So, 6 AWG copper is the correct minimum.

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