Quick Hits

EPISODE 12 — 265.19(B)

Supervised Installations

SLIDE 1 — SUPERVISED INSTALLATIONS

265.19(B) provides another path for conductor sizing in supervised installations.

Qualified persons can determine branch-circuit conductor sizing under:

ENGINEERING SUPERVISION

SLIDE 2 — WHAT MAKES IT “SUPERVISED”?

The installation must meet all listed conditions.

Including:

🔹 Design provided under engineering supervision

🔹 Qualified persons with documented training and experience in systems over 1000V ac or 1500V dc

🔹 Qualified persons install the system

🔹 Qualified persons provide ongoing maintenance, monitoring, and servicing

SLIDE 3 — DON'T MISS “ALL”

The section doesn't say:

“Have an engineer involved and you're done.”

The supervised-installation requirements contain multiple conditions.

EXAM HABIT:

When a section says all, slow down.

Look for every required condition.

SLIDE 4 — REVIEW ⚡

Which is required for a supervised installation under 265.19(B)?

A. Engineering supervision

B. Qualified persons with documented training and experience

C. Qualified persons installing and maintaining the system

D. All of the above

ANSWER: D

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