| You direct the electrician to take quarterly insulation resistance reading of the ship's critical motors. What additional directions would you give to ensure accurate readings are taken that will allow for the logical comparison of prior and current readings? |
| A) Use a different megohmmeter from previous tests. |
| B) While using a hand crank megohmmeter take a reading after 30 seconds of cranking the handle. |
| C) Correct the readings to a reference temperature; reference temperature should be recorded in prior readings history. |
| D) While using a hand crank megohmmeter take a reading after 3 minutes of cranking the handle. |
