Mike Dolt Enterprises
Mike Dolt Enterprises
User: wbculley, Location: weirton wvwork
Asked on: Friday, April 8, 2011 at 7:39 pm EDT
Answered on: Tuesday, May 14, 2024 at 3:58 am EDT
Question: I have a job installing light fixtures (not luminaries I'm American) on a building with a rubber roof. I am considering NMFlex with #10 wire. Temp max probably 115 in Day.Lights won't be on til nite probably 80 atextreme temp. In WVAlso what type of blocks risers etc do they make to raise conduit above rubber roofs.
Conduit
NMFlex with AWG #10 wire is suitable for your application. It is rated for temperatures up to 90°C (194°F), which is sufficient for the expected maximum temperature of 115°F.
Conduit Supports
Conduit Risers
Use PVC conduit risers to raise the conduit above the rubber roof. They are typically available in heights of 6 inches to 24 inches.
Conduit Blocks
Use PVC conduit blocks to create a level surface for the conduit risers. They are typically available in sizes ranging from 2x2 inches to 6x6 inches.
Conduit Straps
Secure the conduit to the conduit risers or blocks using PVC conduit straps. They are available in various sizes and can accommodate different diameters of conduit.
Additional Considerations
Penetration Sealants
Use rubber roof penetration sealants to seal the conduit entry points. This will prevent moisture and debris from entering the building.
Conduit Boxes
Use weatherproof conduit boxes to protect the electrical connections from the elements.*
Grounding: Ensure that the conduit and electrical fixtures are properly grounded to protect against electrical shocks. Flag for review