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SESK: Stuff Everyone Should Know · sesk.info/elec-race-pvc-352

Which raceway is described as inexpensive and easy to install, but brittle in the cold and prone to sag in heat?

PVC conduit is cheap and easy but temperature sensitive.

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  1. Rigid metal conduit
  2. Metal wireway
  3. PVC conduit ✔

Why: PVC is Article 352. It is often used underground, but it can crack when cold and sag when hot.

Huh, didn't know that: RMC has long been the standard raceway for physical impact protection.

The dad joke
Why did the PVC conduit stay inside? It couldn't take the cold.
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References

Answer: PVC conduit. PVC is Article 352. It is often used underground, but it can crack when cold and sag when hot.

  1. EC&M: Choosing the Right Raceway www.ecmweb.com/national-electrical-code/code-basics/article/20896212/choosing-the-right-raceway
    conduits manufactured from PVC are brittle when cold, and they sag when hot.
    Checked 2026-10-10.

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