Question 512Electricity & Electronics - Assistant Engineer

The correct answer is C) Disconnect the phase connections to common first, then disconnect the common connection to hull ground. The reasoning for this is that when disconnecting grounding straps from a high voltage circuit, you want to first remove the connections to the live, energized portions of the circuit (the phase connections) before removing the connection to the hull ground. This helps ensure that there is no accidental path for current to flow through the operator, which could result in a shock hazard. Disconnecting the common to hull ground first could leave the phase connections still connected, posing a greater safety risk. The other options are incorrect as they do not follow this proper sequence of disconnection.