The commonly used wiring system type used in domestic properties is the concealed conduit type. This is because it is the most aesthetically appealing. They are commonly used in home electrical wiring systems so as to secure wires from any external damage so as to extend their lifespan.
These wires can be installed by following 4 steps:
The first step: This involves laying electrical conduits within the slab
The second step: This involves laying electrical conduits within the wall
The third step: This involves installing the electrical switchboards back boxes
The fourth step: This involves the installation of distribution boards
Now let us dive in deep at the procedures that should be followed when installing a conduit electrical wiring system.
The first step: Laying electrical conduits within the slab
- The slab conduits when it comes to the house wiring must be 2 X 25 mm in dimension for the PVC conduits. Make sure that you lay the slab conduits in the middle of the reinforcement.
- You must use deep junction boxes within the slabs. Perfectly bind the PVC conduits by using the binding wire.
- It is in your best interest if you adhere to the color coding when dealing with conduits for electrical wires as well as data lines such as telephone wire and LAN. Use the grey PVC black PVC for the electrical cables, grey PVC for data, and PVC solvent for connecting the accessories.
- Make sure that you inspect the wall drops carefully so as to identify the weakness in the concrete.
- Inspect the conducting as shown by the service blueprint and identify where the switchboards should be located and how many points have to be installed upon each location.
- Make sure that you take all the important measures when creating your slab
- Replace any broken pipes
- Make sure that all the joints are watertight
- As soon as the slab as well as the beam are de-shuttered, you have to pass the GI wiring. Make sure to record any choke up or alternative path just for a future reference
- Install all the necessary sleeve beams, columns before the slab casting as required by electrical and air conditioning
- Install the pull boxes along with every suitable location
- Never cluster the junction or pull boxes within a single place. Arrange them so that they are invisible from crowded areas as shown from the blueprint.
The second step: Laying electrical conduits within the wall
- Conduct the necessary conduit work as soon as the construction of the masonry wall is done. But this should be prior to plastering.
- As soon as the brickwork curing is done, move to the chasing work. Make sure that you maintain a 7 days interval between two activities.
- Work on the wall chasing with wall cutters only because this will prevent damaging the walls.
- Make sure that you fix the electrical conduits using the approved clips so as to ensure proper routing as well as wiring.
- As soon as the boxes, conduits, as well as accessories, are repaired, then fill the chiseled surface using cement mortar as well as chick mesh while wrapped around the conduits.
- Begin the wall conducting work by marking all levels upon the wall, make sure that the height is above the finished floor level.
- Make sure that you limit the chasing width depending on the number of conduits.
- The chasing depth must be at least 10 mm from the masonry wall so as to allow conduit access
- Ensure that all the horizontal conduit extensions are straight reaching the box level. The light point conduit has to extend straight vertically and connect to the switch box. Ensure that there is no wall conduit which is taken haphazardly.
- Never use any kind of bends or elbows. Make sure that you use a spring for bending in case you need to alter the pipe direction.
- Never run any power conduit along any communication line
- Make sure that all the conduits are running above the false ceiling while having proper support. Never let them rest upon the false ceiling.
The third step: Installing the switchboards back boxes
- Make sure that you treat the concealed switchboard perfectly at a level depending on the blueprints. For example, consider the distance and height requirements from the finished floor level
- Ensure that there is an equal gap between the concealed switchboards. Make sure that you maintain uniformity over the entire installation.
- Switchboards should be readymade modular type metal boxes that have been approved. Install the concealed box to 3 mm under the plastered surface.
- Make sure that you finish the box fitting before you move on to plastering. The boxes should be filled with thermo-cool during the plastering process
The fourth step: Installing the distribution boards
- Make sure that you conceal the distribution board prior to plastering
- Install the DB box as required putting into consideration the line and level provided by the brickwork
- Install the box depending on the design such as installing the number of conduits that are entering the distribution box
- Make sure that you place all the needed PVC pipes in their respective holes
Ensure that you follow all the above steps in their mannerly order so as to successfully install your concealed electrical wiring system. You can call us for your electrical supplies and services. We are among the leading companies in the field.