When Working on the High-Voltage System, Which of the Following

Multiple Choice

When working on the high-voltage system, which of the following should be done?

A) Always place the high-voltage service plug where someone will not accidentally reinstall it.
B) Before servicing, use a voltmeter set on 400 VDC to determine if the high-voltage system voltage is at 0 volts.
C) Test the integrity of the insulating gloves prior to use.
D) All of these choices.