What is the definition of a bonding jumper?

• A. A reliable conductor to ensure the required electrical conductivity between metal parts required to be electrically connected.
• B. A device that interrupts current between parts of a circuit.
• C. A non-conductive spacer used in mounting equipment.
• D. A protective coating applied to metal parts.

Answer: (A)

A bonding jumper is a conductor used to establish electrical contact between two metal parts that must be at the same electrical potential. Its job is to create a low-impedance, continuous path so fault currents or stray voltages can quickly equalize, improving safety by preventing shock or stray currents from creating dangerous differences. It is not meant to interrupt current, nor is it a spacer or coating. For example, it bonds metal water piping or equipment enclosures to the grounding system to keep all connected metal parts at the same potential.