Answer:

1. Locknut - This is may be a bonding locknut or a sealing locknut whose main function is to connect externally threaded conduit or connect to a treadles opening in a box or enclosure. Locknut is used for RMC and IMC, and for EMT connectors.

2. Bushing - This is installed to preotect wire from abrasion and to mechanically secure rigid metal conduits to a box or enclosure.

3.Flexible Nonmetallic Conduit Coupling - This is connector is used to effectively join FNMC to a box or enclosure.

4. Flexible Conduit to Coupling/Connector - Made of PVC (Polyvinyl Chloride), this coupling has a mechanism to lock flexible conduit upon insertion. It is used to join length of FNMC.

5. Liquidtight Flexible Metal Conduit Connector -
• This is used to effectively bond conduit to a box or enclosure.

• it also used flexible metal raceway is installed outdoor or in area exposed to continuous moisture.

6. Flexible Nonmetallic Conduit Connector - This is connector is used to effectively join FNMC to a box or enclosure.

7. EMT Reducer - This is utilized when joining EMT conduits of two different sizes.

8.  EMT Connector Set Screw Type -
• Also known as a box connector, this is used to mechanically secure EMT conduit to a box or enclosure.
• This is associated with locknut.

9. EMT Coupling Set Screw Type - This is used when joining length of EMT conduits.

10. Polyvinyl Chloride - high strength thermoplastic material widely used in applications, such as pipes, medical devices, wire and cable insulation.

Explanation: