You need no conduit on a residential home using Romex wiring with wooden studs. For a 15 amp circuit use 14/2 wire with a 15 amp breaker. This can only be used in bedrooms, living rooms, and dining areas. All other areas of the home require 12/2 wiring with a 20 amp breaker.
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Conduit fitting is used on metal pipes that house electrical wires. These fittings are not only to connect the various pieces together, but to keep a relatively water tight seal to the wires.
Conduit is just a medium to get the wires from one place to another. There is no voltage restrictions in low voltage wiring (750 volts or less). When it comes to conduit fill, electricians are governed by the electrical code conduit fill tables. The conduit is sized to accommodate the conductor size for a specific load.
PVC is a material, Poly vinyl chloride - a type of plastic. 20 mm is a size, probably inner diameter of a cylindrical pipe. Conduit means that it's used to run something like other wires, or a thinner pipe, through.
The six methods of fixing conduit include: Conduit Hangers - These are brackets or clamps that attach the conduit to walls or ceilings. Straps - These are metal or plastic bands used to secure the conduit at specific intervals. Support Brackets - These provide additional support for heavier conduit runs, ensuring stability. Wall and Ceiling Clips - These are used to fasten the conduit directly to walls or ceilings. Junction Box Mounts - These attach conduit to junction boxes for secure connections. Conduit Fasteners - These include screws, anchors, or other hardware used to hold the conduit in place. These methods ensure that the conduit is securely installed and compliant with electrical codes.
A conduit connecter is a connecting piece used to connect two individual conduit units together. Conduit connecters can refer to both electrical conduits and pipe/plumbing related conduits.