Understanding Electrical PVC Conduit Sizes

Selecting the Right PVC Conduit for Your Electrical Wiring Project – PVC Conduit for Electrical Wiring – (Poly Vinyl Chloride). PVC conduit is commonly used for underground electrical wiring. By: Dave Rongey

Working with Electrical PVC Conduit
[ad#block]Electrical Question: Should I use special PVC couplings and fittings for Schedule 80 Electrical PVC Conduit?

I am just curious,

• I am using 1″ schedule 80 PVC conduit.
  • Do they make schedule 80 couplings(SxS) or can you use schedule 40 PVC fittings?

This electrical question came from: Phil, a Homeowner from Duvall, Washington.
See more about Electrical Wiring for Washington

Dave’s Reply:
Thanks for your electrical question Phil.

PVC Conduit for Electrical Wiring

Phil, the couplings and fittings for schedule 40 and schedule 80 PVC are the same size, here’s why:
Differences Between Schedule 40 and Schedule 80 PVC Conduit

• The inside diameter is smaller with schedule 80 PVC because the wall of the conduit is thicker.
• The inside diameter of schedule 40 PVC conduit is larger because the wall of the conduit is thinner.
• The outside diameter of both SCH 40 and SCH 80 is the same.

Selecting the Right PVC Conduit for Electrical Wiring

• PVC Conduit for Electrical Wiring – (Poly Vinyl Chloride).
• PVC conduit is commonly used for underground electrical wiring.
• The gray color makes it easy to identify Electrical PVC Conduit.
• Schedule 40 PVC is the most commonly used for underground wiring.
• Schedule 80 PVC has a thicker wall to provide more protection to the electrical wire.
  Schedule 80 PVC is commonly used in above ground applications where the conduit is vulnerable to damage.

The Following will assist you with your electrical question:

For more information about Electrical Code:
Electrical Code

• Home Electrical Code
  • Electrical Code Directory covering AFCI circuit, electrical-boxes, electrical-circuit, electrical-code-outlets, electrical GFCI, electrical-grounding, electrical-project, electrical-services, electrical-underground, electrical-wiring, electrical-wiring-code, lighting-codes and smoke-detectors.

Guide to Home Electrical Wire

• Electrical Wire for the Home

• Complete listing of electrical wire types and parts used for home projects with electrical code information serves as selection guidelines.

The following may also be helpful for you:

Dave's Guide to Home Electrical Wiring: » You Can Avoid Costly Mistakes! « Here's How to Do It: Wire It Right with the help of my Illustrated Wiring Book Great for any Home Wiring Project. Complete Guide to Home Electrical Wiring Perfect for Homeowners, Students, Handyman, Handy Women, and Electricians Includes: Wiring GFCI Outlets Wiring Home Electric Circuits 120 Volt and 240 Volt Outlet Circuits Wiring Light Switches Wiring 3-Wire and 4-Wire Electric Range Wiring 3-Wire and 4-Wire Dryer Cord and Dryer Outlet How to Troubleshoot and Repair Electrical Wiring Wiring Methods for Upgrading Electrical Wiring NEC Codes for Home Electrical Wiring ....and much more. Learn more about Home Electrical Wiring with my Online Video Course: Basic Home Electrical Wiring by Example

Be Careful and Be Safe - Never Work on Energized Circuits!
Consult your Local Building Department about Permits and Inspections for all Electric Wiring Projects.

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