Engine: Electricity

1. A Each pole is tested individually with the clamp-on ammeter clamped around a single conductor with the common tripping bar removed throughout the procedure.
2. B Each pole is tested individually with the clamp-on ammeter clamped around a single conductor with the common tripping bar attached throughout the test procedure.
3. C All poles are tested simultaneously with the clamp-on ammeter clamped around all three conductors with the common tripping bar removed.
4. D All poles are tested simultaneously with the clamp-on ammeter clamped around all three conductors with the common tripping bar attached.

Tip: press A-D to answer