You're asking a great question about code interpretation, and it highlights a common issue in electrical work: conflicting requirements and understanding hierarchy. Let's break down the relevant NEC 2017 articles: NEC 2017 Article 210.8(B) GFCI Protection for Personnel - Other Than Dwelling Units. This article generally requires GFCI protection for receptacles in damp or wet locations. NEC 2017 Article 680.51(A) requires a GFCI for all 125V, 15- and 20-ampere receptacles located within 20 ft of the inside walls of a spa, hot tub, or hydro massage tub. NEC 2017 Article 620.85 GFCI Protection. This article pertains specifically to Elevators, Dumbwaiters, Escalators, Moving Walks, Platform Lifts, and Stairway Chairlifts. It states GFCI protection is provided as required in 210.8(B)(1) through (B)(10). NEC 2017 Article 210.8(A)(5) requires GFCI protection for receptacles installed in bathrooms in dwelling units.Analysis and Answer

Here's why the engineer is likely incorrect:1. Article 620.85 Doesn't Apply

Article 620 is about elevators, escalators, etc. Your sewage sump pump is NOT one of these. Therefore, Article 620.85 is irrelevant to your situation.
2.

Article 210.8(B) Does Apply

Since your receptacle is in a wet location and is not specifically exempted elsewhere in the code, Article 210.8(B) requires GFCI protection.

Conclusion



You are correct. The receptacle for the sewage sump pump in the indoor wet location requires GFCI protection per NEC 2017 Article 210.8(B). Article 620.85 is not applicable.

How to Respond to the Engineer

Politely, but firmly, explain your understanding of the code and why Article 620.85 is not relevant. State that Article 210.8(B) clearly requires GFCI protection for receptacles in wet locations unless specifically exempted (which a sump pump receptacle is not).

Important Considerations



Manufacturer's Instructions

Always check the manufacturer's instructions for the sump pump. Some pumps may have specific requirements (e.g., dedicated circuit) that could further influence the installation.

Local Amendments

Always check for any local amendments to the NEC. Your jurisdiction might have additional or superseding requirements.

Professional Judgment

While the code is the starting point, experienced electricians also apply professional judgment to ensure safety.

In summary, stand your ground on the GFCI requirement. It's a vital safety measure in wet locations, and the code supports your position.Disclaimer: I am an AI Chatbot and not a qualified electrical engineer or inspector. Always consult with a licensed electrical professional for code compliance and safety issues.* Flag for review