Aug 12, 2021

Electrical Work - Standard Work Procedure

Electrical Work


Introduction:

This standard operating procedure enumerates the scope of Electrical work to be executed in the Tower area as specified in the approved drawings and at places when instructed by the Tower-in-charge.

Responsibility: 

The respective Tower-in-charge is responsible to execute the work as per the procedure.

Safety & protection:


PPEs like safety belts at height, helmets, safety goggles, earplugs, and hand gloves, etc. should be used properly.
 
Ensure the working area is kept clean for easy access.

Proper illumination is to be provided during the work if required.

Educate the workmen through the pep-talk meetings. 
 

Work Method:


Slab Conducting:  

Customer changes shall be reviewed at the time of slab conducting work and changes should be incorporated.

Conduits for electrical work shall be fixed as per drawing and only after completion of reinforcement work completely.

A minimum 1-inch gap shall be kept between two conduits to ensure uniform concreting. 

In lobby areas keep the gap by bunching two conduits.

Ensure drops of beam light points and wall light points are not placed in the opening area.

For wall conduit points, ensure drop goes in the wall area by checking wall alignment in drawing (This will ensure no conduit projecting out from beam bottom on wall face after doing wall conducting).

Conduits should be fixed firmly by tying with reinforcement at the approx 1-meter intervals.

Check for uniform application of cement solvent at pipe joints and at bends.

Electrical and telephone conduit should have, a minimum distance of 150 mm between them.

Conduit shall be fixed with a minimum cover of 5mm.

Protection of ends of conduit, lightbox, and fan box shall be done to ensure no choke after concrete.


Wall Activity:

After De-shuttering, all electrical points should be opened and wire passing should be done. The wire should of GI 18 SWG.

Record the points which are choked and can't be rectified. Make a correction plan for the same.

After Completion of Blockwork and level pads for internal plaster, mark reference floor level on walls at 600mm from FFL.

Chase wall portion for fixing switch boxes by using a cutter, chisel, and hammer.

The switch box shall be fixed as per drawing, in line with internal plaster level pads on the wall and with the help of reference level.

Chasing for conduits on walls shall be done with the chasing machine only.

In case points are choked and are taken through the floor, the saddle clamp should be fixed at the wall and floor corner on both sides.

Filling of conduit chase shall be done by Blockwork contractor with cement mortar of 1:4 and it should be cured for minimum of 7 days.


Wiring and Fittings:

After Approval from Tower-in-charge, wiring activity should be started and done as per color coding shown on the drawing.

At the time of wiring, if any wall finish gets damaged, it should be shown to Tower-in-charge to ensure repairs.

Once the 2nd coat of putty is completed in the flat area or as per instruction from Tower-in-charge light fitting fixing should be started.

If the embedded box is damaged or the edge finishing around it is incorrect or the wall finish around the board is not in line then the switch plates or cover plates should not be fixed in position without rectifying the defect.

To connect wires on the switch as per color coding and as shown in the drawing.
 
Fix switch plates in position and check for their level and alignment.

Do fix cover plate on top of switch plates and check for its alignment and fitting.

In case a wall point is made on the wall by doing the local adjustment, check its feasibility by overlooking other finishes.

Void should not be seen around the cover plates, in case there is void it should be rectified by removing the switch plate. Do not allow local repair touch without removing it.

Do check operation of all switches and light point for their correctness, its responsibility of Electrical engineer to ensure wiring done correctly and all switches and light points are working correctly.


Team 
CBEC India

1 comment:

  1. Electricians usually start their work by reading blueprints - technical diagrams that show the locations of circuits, outlets, load centers, panel boards, and other equipment. After determining where all the wires and components will go, electricians install and connect the wires to circuit breakers, transformers, outlets, or other components and systems. trusted electrician Edinburgh

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