EEC 129 Electrical Building Installation Lecture Note Pdf Download
EEC 129 Table of Contents
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.
EEC 129 PDF WEEK 1
1. Electrical Safety
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 amount 1 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:
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.
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