Areas where PVC Conduit is Not Allowed

PVC conduit is a popular choice for electrical wiring installations due to its durability, affordability, and ease of installation. However, there are certain areas where PVC conduit is not allowed to be used. Understanding these restrictions is crucial for ensuring compliance with building codes and regulations.

Connector Model Size A Size B Size C
1821-E 1/2″ 3/8″ 1/2″

One area where PVC conduit is not allowed is in locations where it is exposed to direct sunlight. PVC conduit is not UV resistant, which means that prolonged exposure to sunlight can cause it to degrade and become brittle over time. This can compromise the integrity of the conduit and increase the risk of electrical hazards. In these situations, it is important to use conduit that is specifically designed for outdoor use and is UV resistant.

Another area where PVC conduit is not allowed is in locations where it is exposed to extreme temperatures. PVC conduit has a limited temperature range and can become deformed or damaged when exposed to high temperatures. In these situations, it is important to use conduit that is rated for the specific temperature conditions of the installation area to ensure safety and reliability.

Model Tube(a) Stem(b)
1801-A 1/4 1/4
1801-C 1/4 3/14

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PVC conduit is also not allowed in areas where it is exposed to physical damage or impact. PVC conduit is not as strong as metal conduit and can be easily damaged by heavy objects or machinery. In these situations, it is important to use conduit that is more durable and resistant to impact to protect the wiring and ensure the safety of the installation.

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In addition, PVC conduit is not allowed in areas where it is exposed to chemicals or corrosive substances. PVC conduit is not resistant to certain chemicals and can deteriorate when exposed to corrosive substances. In these situations, it is important to use conduit that is specifically designed to withstand exposure to chemicals and corrosive substances to prevent damage and ensure the longevity of the installation.

Furthermore, PVC conduit is not allowed in areas where it is exposed to fire hazards. PVC conduit is not fire resistant and can contribute to the spread of fire in the event of a fire emergency. In these situations, it is important to use conduit that is fire rated and designed to withstand high temperatures to protect the wiring and prevent the spread of fire.

Overall, understanding where PVC conduit is not allowed is essential for ensuring the safety and compliance of electrical wiring installations. By following building codes and regulations and using the appropriate conduit for each specific application, you can ensure the reliability and longevity of your electrical installations. Remember to always consult with a qualified electrician or building inspector if you have any questions or concerns about the use of PVC conduit in your installation.

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