Bonding and grounding of aircraft electrical systems primarily serves what purpose?

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Multiple Choice

Bonding and grounding of aircraft electrical systems primarily serves what purpose?

Bonding and grounding aim to provide a continuous, low-impedance path for electrical currents so all metallic parts share the same electrical potential. When all conductive surfaces are effectively at the same potential, current returns have a direct route and there’s little potential difference to drive arcing at joints, connectors, or fittings. This reduces sparking, lowers the risk of damage from faults, and helps protect sensitive avionics from EMI. Grounding also gives fault currents a clear path to the source, allowing protective devices like breakers to operate quickly to clear faults. Increasing impedance would hamper fault current flow, circuit breakers aren’t replaced by bonding, and adding weight isn’t the purpose of bonding and grounding.

Bonding and grounding aim to provide a continuous, low-impedance path for electrical currents so all metallic parts share the same electrical potential. When all conductive surfaces are effectively at the same potential, current returns have a direct route and there’s little potential difference to drive arcing at joints, connectors, or fittings. This reduces sparking, lowers the risk of damage from faults, and helps protect sensitive avionics from EMI. Grounding also gives fault currents a clear path to the source, allowing protective devices like breakers to operate quickly to clear faults. Increasing impedance would hamper fault current flow, circuit breakers aren’t replaced by bonding, and adding weight isn’t the purpose of bonding and grounding.

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