Which cables need to be covered in orange to warn of high voltage?

• A. Only cables above 100V
• B. All cables
• C. Any over 30V AC or 60 V DC
• D. Only cables in the engine bay

Answer: (C)

High voltage warning relies on color coding to quickly signal dangerous circuits. In electric vehicles, any cable that could carry hazardous energy is colored orange. The standard threshold is any cable that could deliver more than 30 volts AC or more than 60 volts DC. This level of voltage has enough energy to cause a shock or burn, so those cables are clearly marked to prompt careful handling and proper de-energizing before service.

So cables that meet that voltage threshold should be orange, regardless of where they are located—engine bay included but not limited to it. The other options miss this principle: requiring orange only above 100V would ignore many dangerous circuits; labeling all cables would be impractical and unnecessary; and choosing cables by location (like only in the engine bay) ignores the actual voltage risk.