96
Section 2 Installation
PVC is easily worked. It can be bent using
special bending boxes with heating elements to
warm the conduit. This allows it to be easily bent
by hand, using a simple bending jig. Preformed
bends may also be obtained. To connect the
PVC and fi ttings, a special glue and primer are
used. See Figure 4-29.
Attaching Fittings to PVC
1. Clean the inside of the fi tting and the end
of the conduit with a rag.
2. Dry-fi t the fi tting on the conduit to check
the fi nal position.
3. Remove the fi tting.
4. Apply primer to the inside of the fi tting and
the outside of the conduit.
5. Apply cement to the primed areas.
6. Push the conduit into the fi tting while
turning the fi tting a quarter turn.
7. Look at the seam for a bead of glue to
indicate a proper amount of cement.
Note: NEC 225.27 requires conduit run under-
ground to be sealed at joints prior to entering
building.
Intermediate Metal Conduit
Intermediate metal conduit (IMC) is per-
mitted for use in all atmospheric conditions and
in all types of occupancies. Like its counterpart
Figure 4-28. Numerous types of fi ttings, elbows, and
mounting hardware facilitate the installation of rigid
PVC conduit. (Kraloy Fittings)
Step 1
Apply primer to the
inside of the fitting.
Step 2
Apply primer to the
outside of the conduit.
Step 3
Apply glue to the
inside of the fitting.
Step 4
Apply glue to the
outside of the conduit.
Step 5
Push the conduit into
the fitting. Turn the
conduit 1/4 turn to spread
the glue evenly.
Step 6
This is a cutaway
view of the completed
assembly.
Figure 4-29. Follow these steps to make the PVC
attachments watertight.
rigid metal conduit, IMC is available in 10’
lengths. Each length or part of a length must be
properly connected and joined to other lengths
or enclosures using the correct fi ttings. IMC is
available with or without threads. Installation
is the same as rigid metal conduit.