Electrical Estimation & Costing

Revision of Wiring Methods

Standard practices of wiring and requirement of wiring as per relevant (IS:732-1963)

Factors to be considered for Selection of Wiring

Selection of wiring methods

Layout of wiring

Calculations of length of wire

Quality of wiring material for residential & commercial installation using suitable design of illumination system

Wiring diagram of individual switchboard

Preparation of bill of material (numerical)

 

Earthing

Method of earthing as per IS:732-1963

Estimation of cost of installation earthing

Requirement of earthing installation for substations

Residential and Commercial installation of earthing

Earth resistance for various installation

 

Overhead Lines

Main components

Types of Supports

Types of Insulators

Estimation and Costing of Overhead lines

 

Underground Cables

Types of Cables

Method of Laying of Cables

Estimation of cost of Underground cable installation

Differences between Overhead Transmission lines and Underground cables installations

 

Meaning of Terms using in Estimation & Costing

Principle of estimation purpose of estimation & costing

Approximate estimates

Detailed estimates

Preparation of detailed specification

Standard specification book

Market rate for Material & Labours

Standard schedules of rate

 

Principles of Costing

Methods of employing labour & making payments

Preparing rate analysis for items

 

Quotation, Price lists, Tenders & Causes in Tenders

Comparative statement

Overhead charges

Per point Charges & fixed percentage costing

Order of supply

Payment of bills

Cost escalation clause in tenders & its necessity

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