Open any electric vehicle and the high-voltage cabling jumps out — it is bright orange. That colour is not a styling choice; it is an internationally recognised warning that tells technicians "this circuit can hurt you." The tape that wraps those harnesses has to do three jobs at once, and colour is only the first.
Three requirements, not one
- Identification — high-voltage orange, so anyone working on the vehicle sees the hazard instantly.
- Heat resistance — battery-pack and motor zones run hot; the wrap typically needs LV 312 T3–T4 class performance.
- Flame retardancy — many programs require the tape to be flame retardant (UL 94 V-0) and often zero-halogen for low toxic smoke. Note: flame retardant means self-extinguishing, not "fireproof."
Building the specification
A complete request combines all three: "orange EV high-voltage cloth tape, LV 312 T3, flame retardant UL 94 V-0, zero-halogen." Leaving out the temperature class or the flame rating is the most common mistake — the tape may look right but fail qualification.
Why this line is growing fast
As EV and hybrid volumes climb, orange high-voltage tape has moved from a niche item to a core harness component. Every high-voltage battery, inverter and motor loom needs it, and the safety-critical nature of the application means buyers care more about consistency and certification than about price alone.
How EJOY helps
EJOY manufactures orange high-voltage harness tape with matched heat and flame-retardant grades, produced in an IATF 16949 certified process. We provide certificates and test reports on request and ship free samples so your engineering team can validate the colour, heat class and flame rating together.