EEC 129 Electrical Building Installation Lecture Note Pdf Download

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EEC 129 Electrical Building Installation Lecture Note Pdf Download

 

Week 1: Electrical Safety

Week 2: Electrical Safety

Week 3: Electrical and Electronics Symbols

Week 4: Electrical and Electronics Symbols

Week 5: Cables in Electrical installation

Week 6: Cables in Electrical Installation

Week7: Cables in Electrical Installation

Week 8: Cables in Electrical Installation

Week 9: Simple Lighting Circuits

Week 10: Cost Estimation in Planning

Week 11: Cost Estimation in Planning

Week 12: Electrical bill of Quantities

Week 13: Allocation Plan

Week 14: Allocation of Lighting and Power Points

Week 15: Allocation of Lighting and Power point

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EEC 129 PDF WEEK 1

1. Electrical Safety

1.1 Introduction

Electricity can kill. Whenever you work with power tools or on electrical circuits,

there is a risk of electrical hazards, especially electrical chocks. Working with

electricity can be dangerous. Engineers, electricians, and other professionals work

with electricity directly, including working on overhead lines, cable harnesses, and

circuit assemblies. Others, such as office workers and salespeople, work with

electricity indirectly and may also be exposed to electrical hazards.

Many workers are unaware of the potential electrical hazards present in their work

environment, which makes them more vulnerable to the danger of electrocution.

What are the Hazards?

Contact with live parts causing shock and burns

Faults which could cause fire

Fire or explosion where electricity could be the source of ignition in a

flammable atmosphere

Electrical shock is caused by completing an electrical circuit by:

Touching a live wire and an electrical ground

Touching a live wire and another wire at a different voltage

The danger from electrical shock depends on:

The amount1

of current through the body

The duration of current through the body

The path of current through the body

Burns are the most common injury caused by electricity:

Electrical burns

Arc burns

Thermal contact burns

Electric shock can cause muscle spasms, weakness, shallow breathing, rapid

pulse, severe burns, unconsciousness, or death.

In a shock incident, the path that

electric current takes through the body

gets very hot.

Burns occur all along that path,

including the places on the skin where

the current enters and leaves the body.

It’s not only giant power lines that

can kill or injure you if you contact

them.

You can also be killed by a

shock from an appliance or power cord

in your home. Electrical Shock

EEC 129 Direct Download

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