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The only wiring which has to be planned well before starting of a house construction work and executed along with construction is:
Cleat wiring
Batten wiring
Conduit surface wiring
Conduit concealed wiring
Conduit concealed wiring
Conduit concealed wiring requires the conduits (pipes) to be embedded within the walls, floors, or ceilings during the primary construction phase. Because the conduits must be placed before plastering or concrete pouring, it is the only method that must be planned and executed in tandem with the structural work.
Conduit concealed wiring requires the conduits (pipes) to be embedded within the walls, floors, or ceilings during the primary construction phase. Because the conduits must be placed before plastering or concrete pouring, it is the only method that must be planned and executed in tandem with the structural work.
R=╧БAlтАЛ тАФ fundamental resistance formula governing conductor sizing for conduit loads
The conduit system acts as a protective pathway for insulated conductors. During construction, PVC or GI pipes are laid out according to the electrical layout drawing and secured to reinforcement bars or wall chases. Once the structural masonry or concrete work is finished, the wires are drawn through these pre-laid pipes using a fish tape (draw wire).
Conduit concealed wiring provides the highest level of mechanical protection for conductors.
It is aesthetically superior as no wires or pipes are visible to the room occupants.
Future additions or changes to circuits are difficult once the wall surface is finished.
Compliance with IS codes requires specific bending radii for conduits to ensure easy wire pulling.
High protection against mechanical injury and fire
Excellent aesthetic appeal (hidden from view)
Durable and long-lasting installation
High initial cost compared to surface methods
Difficult to locate faults or modify circuitry after construction
Requires skilled labor during the masonry phase
Residential buildings
Office complexes
Public infrastructure buildings
Option A (Cleat wiring) is a temporary, surface-based system using porcelain cleats.
Option B (Batten wiring) is a surface system using wooden or plastic battens.
Option C (Conduit surface) involves piping attached to the wall surface after construction, requiring no structural pre-planning.
D is correct тАФ Conduit concealed wiring must be embedded within the structure during the construction process, unlike surface-mounted methods.
Always remember that 'concealed' means 'hidden inside walls', which implies the necessity of synchronization with civil construction schedules.