Weight factors for Electrical Construction Work

Followings are the sample weight factors for each work step for each field work category. The activity lists are based on Sample WBS for Electrical Construction Work.

Switch gear/ Motor Control Centers Installation

Work Steps          Weightage

Installation              85%

Testing                  10%

Punch Item             5%

New Panel /IRT (Inter Posing Relay System) Installation

Panel Installation -------- 85%

Testing -------10%

Punch Item ------- 5%

Panel Modification

Preparation ------10%

Modification ------ 80%

Recovery ------10%

Cable Tray Installation

Support Installation ----- 30%

Tray Installation ---- 70%

Indoor Cable Termination

Termination ------ 95%

Testing ------ 5%

Conduit Installation

Support Installation ------ 30%

Conduit Installation ------ 70%

Power Wiring (Equipment Installation) 

Support Prefabrication ------- 30%

Installation ------- 60%

Testing -------10%

Power Wiring (Cable Termination) At Substation (High Voltage/Medium Voltage/Low Voltage)

Cable Gland Plate Installation ----- 10%

Termination ----- 85%

Testing ----- 5%


Power Wiring (Cable Termination) At Field (High Voltage/Medium Voltage/Low Voltage)

Stub up Installation ------- 10%

Termination ------- 85%

Testing ------- 5%

Power Wiring (Cable Tray Installation)

Support Installation ------ 30%

Tray Installation ------- 70%

Lighting Panel Installation & Termination

Support Prefabrication ------ 25%

Installation ----- 65%

Termination ----- 5%

Punch Item ----- 5%

Lighting Fixture Installation & Termination

Support Prefabrication ------30%

Installation ----- 55%

Termination ----- 5%

Testing ------ 5%

Punch Item ----- 5%

Street Lighting Installation and Termination

Concrete Foundation ------ 20%

Installation ----- 65%

Termination ----- 5%

Testing ------5%

Punch Item ----- 5%

Lighting Cable Laying 


Cable Laying -------- 95%

Punch Item ---------5%

Junction Box Installation & Termination

Support Installation ----- 10%

JB Installation ------ 35%

Cable Termination ------ 50%

Punch Item ------- 5%

Lighting Cable Tray Installation

Support Installation ------ 20%

Conduit Installation ------ 75%

Punch Item ------ 5%

Lighting Conduit Installation

Support Installation ------ 20%

Conduit Installation ------ 75%

Punch Item ----- 5%

Grounding Electrode Installation with Well

Electrode Installation ------ 55%

Well Installation ------ 30%

Resistance Test ------10%

Punch Item ------5%

Grounding Wire Installation and Connection

Wire Installation ------ 80%

Stub-up & Connection ------10%

Continuity Check ------- 5%

Punch Item ------- 5%

Use these sample weight factors for electrical construction work as a staring point for developing your own progress calculation sheet. The weighting percentage for each work step may be different from your project team’s preferences.

See also Weight factors for Mechanical Equipment installation Work