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Which type of wiring uses insulated cables supported in porcelain cleats?
Cleat
CTS/RTS
Metal
PVC conduit or PVC capping
Cleat
Cleat wiring is a temporary, surface-type wiring system where insulated cables (usually VIR or PVC) are supported on porcelain cleats. The porcelain cleats act as insulators to prevent direct contact between the cables and the surface or between adjacent cables.
Cleat wiring is a temporary, surface-type wiring system where insulated cables (usually VIR or PVC) are supported on porcelain cleats. The porcelain cleats act as insulators to prevent direct contact between the cables and the surface or between adjacent cables.
VmaxтАЛтЙд250V тАФ Standard voltage limit for temporary cleat wiring installations
RinsulationтАЛтЙИL1тАЛ тАФ Relationship showing insulation resistance per unit length
The system utilizes split-porcelain cleats consisting of two parts: a base (with grooves for the cable) and a cap. Cables are laid in these grooves, and the cap is screwed onto the base, clamping the cable securely in place. The high dielectric strength and non-absorbent properties of the porcelain ensure effective insulation and moisture resistance.
Cleat wiring is primarily used for temporary work such as construction sites or exhibitions.
It is easy to install and inspect, but it is not aesthetically pleasing.
The cables must be kept at a sufficient distance from each other and the wall using the cleats.
Porcelain provides high mechanical strength and excellent electrical insulation.
Low installation cost
Easy to install and dismantle
Visible faults for quick repair
Requires no conduits or special tools
Not suitable for permanent installations
Unsightly appearance
Poor protection against mechanical damage and weather
Risk of fire due to accumulation of dust and moisture
Construction sites
Temporary exhibitions
Temporary industrial sheds
Cleat wiring is categorized as an 'Open' wiring system.
Option B (CTS/RTS) refers to Cab Tyre Sheathed or Tough Rubber Sheathed wiring, which is a different method using clips to fix cables directly to walls.
Option D (PVC conduit) refers to a concealed or surface protection system, providing superior mechanical protection compared to cleat wiring.
A is correct тАФ Cleat wiring specifically uses porcelain cleats to hold and insulate conductors in an open, surface-mounted arrangement.
Always remember that Cleat wiring is considered a 'temporary' method; for permanent residential or commercial buildings, the Indian Electricity Rules prefer conduit or casing-capping methods.