National Electrical Installation Standards

Standards as High as Your Own

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Wednesday, March 27, 2019

Question:

Re: CQD answer published Monday, February 25, 2019 -Wet Location

Charlie, I'm a little behind but was wondering why your answer to the Class 2 cable in PVC conduit in a wet location had to be rated for a wet location. If the cable is in the conduit doesn't the conduit protected it from the weather so the inside would be dry?

Thanks for the continuing education information,

Virginia

A

Answer:

Hey Virginia thanks for your follow up question and you are welcome. The interior of raceways installed in wet locations is also considered to be a wet location as stated in 300.9. Even if raceways are "sealed" in the wet location, condensation can occur due to temperature changes.

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CHARLIE TROUT: Charles M. Trout, better known as Charlie, was a nationally recognized NEC® expert and author. He served on several NEC technical committees and is past chairman of CMP-12. In 2006, Charlie was awarded NECA’s prestigious Coggeshall Award for outstanding contributions to the electrical contracting industry, codes and standards development and technical training. NECA continues to provide this public forum in memory and recognition of all his fine contributions that has made the NEC what it is today. 

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