Quick Hits

⚡ Quick Hit — Episode 3

Article 200.7(B)–(E) & 200.8(A)

This episode continues grounded-conductor identification, including larger conductors, flexible cords, multiple voltage systems, and multiconductor cables.

📘 200.7(B) — 4 AWG or Larger

Larger grounded conductors have additional identification options.

For 4 AWG and larger conductors, identification can include a distinctive white or gray marking around the insulation at the terminations when applied during installation.

That means a large conductor does not necessarily need to have a continuous white or gray outer finish for its entire length.

📘 200.7(C) — Flexible Cords

The grounded conductor in a flexible cord is identified using the applicable grounded-conductor identification requirements, including a white or gray outer finish or the identification methods addressed by 400.22.

📘 200.7(D) — Different Nominal Voltage Systems

When grounded conductors from different nominal voltage systems occupy the same raceway, box, or enclosure, the grounded conductors of each system need to be distinctly identified.

The purpose is straightforward:

Different systems need different identities.

The identification method also needs to be documented or permanently posted where the conductors originate so another electrician can determine which system each grounded conductor belongs to.

📘 200.7(E) — Multiconductor Cables

Grounded conductors inside multiconductor cables have their own identification requirements.

The grounded conductor can use a continuous white or gray finish or the applicable stripe identification. Larger conductors can use permitted termination identification methods, and certain flat cables have additional identification provisions.

📘 200.8(A) — Reserved Identification

White and gray insulation, the applicable stripe identification, and permitted white/gray termination markings are reserved for grounded conductors unless another provision specifically permits their use.

🧠 Quick Check

Question: A 4 AWG grounded conductor needs to be identified. Can the grounded conductor be identified with a distinctive white or gray marking around the insulation at each termination?

Answer: Yes.

Under 200.7(B), conductors 4 AWG and larger have additional identification options, including termination markings applied during installation.

⚡ Takeaway

The bigger the conductor and the more complicated the wiring arrangement becomes, the more important conductor identification becomes.

Next: Reidentifying white conductors, terminal identification, polarity, and the completion of Article 200.

← View Chapter 2 Home

← Back To Article 200 Home

← Back To Quick Hits Home