expansion joint in PVC conduit run

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elecmen

Senior Member
Location
NH
Occupation
Electrician
Is an expansion joint required in a PVC conduit run that is 15' long installed underneath a manufactured home in the crawl space?
 
Is the conduit installed between fixed points or free to move ?
 
And what is the temperature range to be expected in the crawl space?
PVC straps that allow for movement will be used to support the run using threaded rod and flange. There will be skirting on the home. Will not be exposed to direct sunlight
 
Your profile indicates New Hampshire. Even with skirting I would expect you to have a temperature change that would require an expansion joint on 15' if the conduit is between fixed points.
 
PVC straps that allow for movement will be used to support the run using threaded rod and flange. There will be skirting on the home. Will not be exposed to direct sunlight
That reduces your temp extreme range from say 140 degrees to maybe only 70 degrees.
 
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