METHOD STATEMENT FOR ELECTRICAL INSTALLATIONS

Purpose

The purpose of this method statement uploaded by hsedocuments highlight and define the procedure step by step to implement the correct practices for the Installation of MOB, SMDB, and DB, MCC & CB through the guidelines contained herein to ensure that the job execution complies with specifications and serves the intended function to a satisfactory level where applicable in the project building.

Scope

This method statement covers all processes related to the Installation of MOB, SMDB, DB, and MCC & CB as the following:

Installation of Cable, MOB, SMDB, DB, MCC & CB.

This method is to be read together with the relevant ITP outlining the responsibility and the fine verification to be finished by using various events.

General Installation Procedure

1. Ensure the work area is ready and safe to start the installation. 
2. Ensure that the work area is ready and safe to start the installation of MDBs, SMDBs, FDBs, MCCs, CBs, and accessories
3. Ensure the installation of MDBs, SMDBs, FDBs, MCCs, CBs & accessories. Carried out following manufacturer's installation recommendations, the requirement of applicable standards, and following recognized industrial practices and specified in project specification to ensure that installation complies with requirements.
4. Before starting the installation, refer to the approved shop drawings related to the area of installation and ensure that required materials are available at the site as per approved material submittals
5. Ensure the materials are stored properly and there is no mark of damage or deformity of any kind before issuing the material from the site store. 
6. All substances and add-ons need to additionally be freed from dust, scale, or oil.
7. Ensure that the issued materials are of approved specifications/submittals and as per the requirement of
8. The area shop drawings. (I.e., Make Size, Model & Type, etc.).

Installation Procedure for MCC, CB & MOB

1. Installation works shall be executed handiest concerning accepted save drawings of the modern-day revision.
2. All components of MCC, CB &MOB such as relays, and fuses. CTs, meters, etc. Shall be proven in opposition to the permitted material submittal. 
3. Ensure the floor surface is ready with base frames grouted to install the switchgear.
4. A minimum clearance of 800 mm shall be maintained at the rear side of the panel so that easy access for the termination of cables and other maintenance works can be carried out.
5. Panelboards shall be installed serially and with Level Verticality following the Manufacturer’s recommendations, approved site layout, and as per site requirement.
6. Check cabinet interconnections, bus bar connections, and control wire connections between the cubicles after proper alignment of the section cubical as per the manufacturer's drawing and approved shop drawing.
7. All knockouts made on the panel covers shall be filed and provided with grommets to avoid sharp edges and unused knockouts shall be covered.
8. The connection of bus bar trunking with all panelboards shall be done rigidly with proper supports.
9. The cable bending radius should be less than 8 times the cable diameter in line with the Manufacturer's recommendation.
10. Cable pulling, termination & crimping shall be done as per the cables method statement.
11. Termination of cables shall be done using approved material submittal for cable glands and lugs. Glanding and connections should be done only by competent technicians and electricians under the supervision of an electrical site Engineer.
12. All panel forums and transfer gears shall be supplied with proper earthing connections as consistent with authorized shop drawings.
13. Manufacturer recommendations are to be followed for all relay, timer, and other breaker current settings, as per the total connected loads and the discrimination study of the system.
14. Identification labels of the approved type shall be fixed on all panel boards.
15. Coordinate with the Main Contractor and ensure the provision of chequer plates on the open trenches inside the LV Room and Electrical rooms.
16. Ensure that all cable entries and other openings of Electrical/LV Room, Wall/Floor are carried out with properly approved sealant.
17. The manufacturer's representative to verify the site installations and provide acceptance of same before Energization of Panelboards after obtaining clearance from the Site Engineer.
18. Raise (WIR) for installation of Panel Boards along with glanding and termination to a consultant.

Installation Procedure for SMDB&FDB

1. Manufacturers represent at life to verify the site installations and provide acceptance of same before Energization of Panelboards after obtaining clearance from Site Engineer.
2. Installation works shall be carried out only following approved shop drawings of the latest revision.
3. Ensure all civil and finishing works are completed and the area is released for the area of Installation and cleared by the civil section to proceed with Distribution Board installations. Also, make sure that the work region is smooth and secure to adopt sports.
4. Ensure the wall surface is ready to install the Distribution Boards.
5. Clearances are to be maintained between the SMDBs and FDBs. As mentioned and described in the approved shop drawings.
6. The height of the Distribution Boards shall be maintained as per approved shop drawings so that easy access for termination of cables and other maintenance works can be carried out.
7. Connection of cable trays/Cable trunking with all Distribution Boards shall be done rigidly with proper supports.
8. All knockouts made on the panel covers shall be filed and provided with grommets to avoid sharp edges and unused knockouts shall be covered. All cable entries shall be closed and sealed adequately.
9. Termination of cables shall be done using approved cable glands and lugs glanding and connections should be done by only competent technician’s electricians as per the approved shop drawing.
10. SMDBs and FDBs shall be provided with proper earthing connections as per approved shop drawings.
11. Doors of SMDBs and FDBs are to be earthed with a flexible connection.
12. Identification labels of approved types shall be fixed on SMDBs and FDBs.
13. Raise (WIR) for installation of SMDBs and FDBs along with glanding and termination to Consultant

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Method Statement for Electrical Installations