Page 294 - CITS - Electrician - Trade Practical

ELECTRICIAN - CITS

EXERCISE 105 : Demonstrate estimation and costing

labour / Materials-accessories as per

layout

Objectives

At the end of this exercise you shall be able to:
• calculate the total load in sub-circuit
• select the size of cable in the sub circuits
• estimate the quantity of materials
• estimate the cost of wiring.

Requirements

Tools/Instruments Materials
• Measuring tape 0-25 m - 1 No • A-4 Paper - as reqd
• SWG - 1 No • Pencil/HP - 1 No
• Steel rule 300 mm - 1 No • Eraser - 1 No
• Micrometer 0-25 mm - 1 No

Procedure

TASK 1: Estimate the cost/bill of material for wiring of Domestic /Commercial building /multi storied
building

1 Calculate the number of sub circuits required for the above load as per IE rules.
Total wattage of light points = 6 x 60=360
Total wattage of fan points = 5 x 80=400

Total wattage of (6A) sockets = 4 x 100=400
Total wattage of (16A) sockets = 2 x 1000=2000
Total 16 Nos = 3160W
2 Assign number of subcircuits to for the load given in the plan

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CITS : Power - Electrician & Wireman - Exercise 104