If you have been working with IEC standards or its derivative standards like the AS, it will be strange for you to learn that NEC and a derivative standard like the PEC use different colors for the insulation of grounded or earthed conductors.
| Term | NEC / PEC | IEC / AS |
|---|---|---|
| Grounded | Earthed | |
| Identificaton | (1) A continuous white outer finish. (2) A continuous gray outer finish (3) Three continuous white stripes along its entire length on other than green insulation. (4) At the time of installation, by a distinctive white or gray marking at its terminations. This marking shall encircle the conductor or insulation. PEC 2017 - Clause 2.0.1.6 |
Green/yellow insulation |
Interface between these different standards will be very difficult. Thorough planning is required.