Which color are high-voltage cables commonly identified with in hybrid and electric vehicles?

• A. Red
• B. Orange
• C. Blue
• D. Green

Answer: (B)

Color coding for high-voltage safety in hybrids and electric vehicles relies on a clear visual signal to warn about dangerous systems. The cables carrying the traction battery and other high-voltage components are insulated in orange so they stand out immediately to anyone working on the vehicle or in an accident scenario. This bright, consistent color helps technicians and emergency responders recognize the risk and follow proper safety procedures, such as isolating the power source and using appropriate PPE, to prevent electric shock or other injuries.

Other colors are used for different purposes in vehicle electrical systems, so they don’t reliably indicate high voltage. Red is often associated with power in general, blue and green have their own common meanings (like low-voltage circuits or grounding), and using them for high voltage would create confusion. Therefore, orange is the standard color used to identify high-voltage cables.