Safety and Compliance Flashcards

A technician is preparing to work on the high-voltage system of a VW ID.4. What color identifies high-voltage cables on the vehicle?

Answer: Orange

Industry convention, followed by VW, marks high-voltage cabling and connectors in orange.

After de-energizing an EV's high-voltage system, what must be done before touching HV components?

Answer: Verify absence of voltage with a properly rated meter

Absence of voltage must be confirmed with a CAT-rated meter, because capacitors and faults can leave voltage present.

Which class of rubber insulating gloves is typically required for work on EV high-voltage systems up to 1,000 V AC?

Answer: Class 0

Class 0 gloves are rated for a maximum use voltage of 1,000 V AC, which covers automotive HV systems.

How should insulating HV gloves be checked before each use?

Answer: Perform an air inflation (roll) test to check for pinholes

Trapping air in the glove and rolling the cuff reveals pinholes or tears that would compromise insulation.

Hand tools used on EV high-voltage components should be insulated and certified to which rating?

Answer: 1,000 V (IEC 60900)

Insulated tools certified to IEC 60900 are rated for 1,000 V AC and provide a second layer of protection.

An EV involved in a collision has a damaged high-voltage battery. What is the safest way to store it in the shop?

Answer: In a designated quarantine area away from buildings and other vehicles

Damaged HV batteries can go into delayed thermal runaway, so they should be isolated in a quarantine zone.

Who may perform repairs on VW high-voltage components?

Answer: Only technicians with the required high-voltage training and qualification

VW limits HV work to technicians who have completed the required high-voltage training and qualification.