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Which types of conduit are typically threaded in order to couple them together or connect them to boxes or fittings?

I. IMC
II. RMC
III. PVC
IV. EMT

Answer :

Final answer:

The conduits that are typically threaded for coupling or connection to other components are IMC and RMC. PVC and EMT conduits are not usually threaded as PVC does not support threading well and EMT uses special fittings for connections.

Explanation:

The types of conduit that are typically threaded in order to couple them together or connect them to boxes or fittings are I. IMC (Intermediate Metal Conduit) and II. RMC (Rigid Metal Conduit).

IMC and RMC are both rigid conduits made of metal and are known for being very durable, providing strong protection for the wires inside. Because they are made of metal, they can be threaded at the ends, allowing them to be screwed together to form long conduits or to be connected to other components such as boxes or fittings.

On the other hand, III. PVC (Polyvinyl Chloride) and IV. EMT (Electrical Metallic Tubing) conduits are not typically threaded. PVC is a type of plastic and thus does not support threading very well. EMT, while made of metal, is thinner and lighter than IMC or RMC and is usually connected using special types of fittings, rather than being threaded.

Learn more about threaded conduits here:

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