Acceptance Mark
IEC/UL 62368-1
Standard IEC/UL 62368-1, for external insulation color requirements for protective conductors (grounding wires)

According to the provisions of, the color of the insulation is used. It is mentioned that the Protective earthing conductor (PE conductor) and the protective bonding conductor (PB conductor) should be green/yellow, except for the PB conductor.

Earthing braid, wherein the insulating layer can be transparent, and can be any color for the PB conductor in the assembled component, as long as the use of PB is not misinterpreted.

For example: multi-wire ribbon cables, bus bars, printed wiring, and the like.