Rigid is a thick wall conduit that is normally threaded. EMT is a thin wall conduit that is not thick enough to be threaded.
Is rigid conduit stronger than EMT?
The walls of rigid electrical conduit, or RMC, are a great deal thicker. As you might expect, RMC is a lot more rugged than EMT. If you’re in an extremely cold climate, or in some other type of harsh environment, RMC will do a fantastic job of protecting wiring.
What is EMT conduit used for?
EMT conduit is more affordable than IMC or GRC, but its thin walls are more easily punctured. It is most often used in dry interior spaces, but it can be used in damp locations with corrosion-resistant hardware and rain-tight fittings.
Why is it important to use rigid steel conduit?
Rigid metal conduit, or RMC, is heavy-duty galvanized steel tubing that is installed with threaded fittings. … It is typically used outdoors to provide protection from damage and can also provide structural support for electrical cables, panels, and other equipment.
What does rigid conduit mean?
: firm thick-wall metallic conduit for electric wiring — compare thin-wall conduit.
Can you bury rigid conduit?
Electrical Cable Depth Options
-deep trench, use galvanized rigid metal electrical conduit with individual conductors inside. … At 24 inches you can bury underground feeder cable, using PVC conduit to 18 inches below ground only where the wire comes up.
Can rigid conduit be bent?
Whether EMT, galvanized rigid steel conduit, or intermediate conduit, you will need to bend it. Bends will be required as part of your installation. Of course, factory-made elbows are available for feeder sizes (11/4-in. and higher).
Is EMT conduit waterproof?
Only outdoor electrical conduit should be used outdoors. Water-resistant wire just resists water. It is not meant to be immersed in water. If your conduit or boxes fill up with water, it will short out and/or you will get leaks.