PEC Code Compliance

PEC 2017 vs Older Editions: Why the Edition You Reference Matters

Electrical codes get revised. Citing the wrong edition on a permit document is a real, avoidable problem.

Electrical codes are living documents, revised periodically as technology, safety data, and construction practices evolve. Citing an outdated edition on a permit submission or compliance document isn't just a technicality — it can trigger a genuine review delay or rejection.

Why This Matters More Than It Seems

A permitting authority or inspector checking your documentation against the currently adopted edition will flag a mismatch immediately if your cited edition doesn't match. Even if your actual design happens to be compliant with the current edition's substance, citing the wrong edition number on paperwork undermines confidence in the rest of the submission.

What to Actually Do

• Confirm which PEC edition is currently adopted by the local building official or utility before finalizing documentation — don't assume based on when you last checked
• Where OhmWorks notes a specific table's source edition in-app, treat that as the edition the calculation reflects, and cross-check it against your project's actual governing edition
• When in doubt, ask the permitting office directly which edition they're currently enforcing — this is a quick, low-friction question that prevents a real delay

See which edition each OhmWorks PEC data table references directly in the calculator results.

Engr. Jason Morales — Founder, SolarEnergyPH & OhmWorks

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