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Code Question of the Day

The Code Question of the Day (CQD) is NECA and ELECTRICAL CONTRACTOR Magazine’s flagship National Electrical Code (NEC®) public forum for the industry. The daily distribution of Q&A generates a lively dialogue and shares relative Code-based practical responses.

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October 13, 2026

Question:

CQD - I have RIGID conduit with threads coming out from underground, Can I use RIGID coupling in the end and then make the transition to EMT ? Thank You, Manuel A.

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October 12, 2026

Question:

Hi CQD.  When sodium hypochlorite (chlorine bleach) solution used for exterior building cleaning is accidentally sprayed into or around an energized electrical receptacle/outlet, can the solution create an electrical short, arcing, corrosion, overheating, or other condition that could increase the risk of electrical failure or fire? If so, are there recognized electrical codes, standards, manufacturer guidance, or safety publications addressing this hazard? Ray D.

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Answer:

Greetings Ray, and thanks for reaching out.  NEMA has released CS 70006-2026, Evaluating Water-Damaged Equipment.  This document indicates that water damaged wiring devices (receptacles, switches etc as defined in Article 100 of the NEC) and GFCIs can possibly be internally contaminated and may not perform properly, even if they appear normal to the user.  The internal components may be affected by the contaminants (including chlorine bleach) and become non-operational or present a hazard.  These devices cannot be reconditioned and should be replaced.