What gauge is required for bonding?

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Multiple Choice

What gauge is required for bonding?

Bonding must provide a low-impedance path for fault current so the overcurrent device trips quickly and all metal parts stay at the same electrical potential. For common building bonding tasks—such as tying metal piping and equipment frames into the electrical grounding system—the minimum copper bonding jumper size is 6 AWG. This size reliably carries any fault current encountered in typical installations without excessive impedance, while smaller gauges (like 8 AWG) may not meet bonding requirements, and larger gauges (4 AWG, 2 AWG) are generally more expensive than needed for standard bonding scenarios.

Bonding must provide a low-impedance path for fault current so the overcurrent device trips quickly and all metal parts stay at the same electrical potential. For common building bonding tasks—such as tying metal piping and equipment frames into the electrical grounding system—the minimum copper bonding jumper size is 6 AWG. This size reliably carries any fault current encountered in typical installations without excessive impedance, while smaller gauges (like 8 AWG) may not meet bonding requirements, and larger gauges (4 AWG, 2 AWG) are generally more expensive than needed for standard bonding scenarios.

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