Q:

What are some tips for installing PVC pipe for an electrical conduit?

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Quick Answer

Tips for installing PVC pipe for an electrical conduit include using Schedule 40 PVC pipe, installing PVC junction boxes before cutting pipe and sealing junctions that go from PVC to rigid material with silicone. The tips for installing PVC pipe for electrical use are numerous, but missing simple things can make the installation much more difficult.

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Full Answer

Using Schedule 40 PVC pipe gives the people installing the pipe and the electrical equipment more room to pull the electrical lines through without using a larger diameter pipe. Schedule 40 pipe and Schedule 80 pipe have the same outer diameter, but the walls of the 40 are thinner than the 80, which is how it gives the extra room. If electrical is being installed in areas that get a lot of traffic or a lot of weight, as in floors, then using the 80 is important because it can hold up better against the weight.

Installing junction boxes where they need to be before cutting the pipe means that there is less chance of having to re-position or re-cut pipe. It can also help reduce the number of bends that may need to made in the pipe.

PVC connections to rigid material can leak, especially if they are in an area that is exposed to water. By sealing the outside of the joint completely with silicone, it prevents water or moisture entering at this point.

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