Underground Conduit

[Ray]

I'm running 1 1/2" underground gray colored rigid nonmetallic conduit to supply a subpanel for a workshop. My question is do I use pvc glue like you would for pvc piping to join the sections ???

Do I use the glue in the bell sections as well where I would need couplings ??

Thanks, Ray

[HA HA Budys Here]

Yes.

Yes.

[Paul Franklin]

Yes and yes. Use the (usually purple) primer to clean and the proper glue (solvent) to join wherever needed.

Paul

[FarmerJim]

I use a grey pvc cement. It is basically the same chemical solvent soup as pvc cement for plumbing fittings, but instead of being transparent is an opaque grey, supposedly from dissolved solids - bits of grey pvc plastic.

Why do I use this instead of plumbing pvc glue? Because the electrical inspector told me to.

Glue everything and let it sit overnight unless you want leaks. Also: XHHW cable is better than THHN or THHW for service in the damp environ that is underground conduit. Unless you seal the above-ground entrances to the conduit moisture will condense out of the air that diffuses into the cooler underground conduit.

[Ray]

Thanks to all who replied..... Ray