lOMoAR cPSD| 4706
, ELECTRICAL INSTALLATION NOTES
TOPIC ONE;
SAFETY
OBJECTIVES
1. Identification of workshop safety hazards
2. Identification of electrical safety hazards
3. Explain the correct procedures of handling accidents
a) Identification of workshop safety hazards
• PROTECTIVE CLOTHING
• Care and maintenance of tools, materials and equipment’s
• Location and operation of safety equipment
i. First aid box
ii. Fire extinguishers
iii. Safe working habits
b) Identification of electrical safety hazards
• Dangers of electricity
i. Fire
ii. Burns
iii. Electric shocks
iv. Arcing
v. Explosion
• Sources of electric dangers
i. Bare wires
ii. Carelessness in handling electrical equipment’s
c) Explain the correct procedures of handling accidents in case of: -
• Cuts
• Fire
• Electrical shock
,Safety
Definition; -
➢ Safety is defined as a state of being free from any risks e.g., injury, electric shock, fire,
and damage of equipment’s or machines.
➢ If safety precautions are not observed then accidents are likely to occur which would
result to the above-mentioned risks. Therefore, in any engineering field safety is of great
importance.
Workshop safety regulations
The following are some of the workshop safety precautions to be observed and also in
electrical field: -
• Ensure that you understand instructions before starting any work. If you are in doubt please
ask for clarifications.
• Use the right tools for the right task or job.
• Use tools which are in good conditions
• Keep gangways and access to fire appliances
• Know where the nearest fire exit is and what to do when there is an outbreak of fire.
• Learn how to give first aid treatment for electric shocks.
• Never ran in the workshop.
Safety in the electrical field or workshop
With regard to safety in this field, it is that electricity is a good servant but a very bad master. For
that reason, the electricians have to be good master in order to take full control of electricity
safety. The following rules should be observed in any electrical work be it in installation to avoid
electrical shocks and other associated accidents.
• When carrying out repair on any point of installation, put off the main switch that
supplies that part.
• If not sure of what to do, it is advisable not to do it.
• Observe the color codes when terminating cables.
• Replace fuses with the right sizes of fuses.
• Avoid touching bare conductors or metallic parts with bare hands
, • Don't touch electrical appliances with wet hands or when standing on wet ground.
• Don't not overload sockets outlets by plugging too many appliances in one outlet.
• Replace faulty electrical accessories immediately to avoid more serious accidents.
• Avoid making combustible materials from or near electrical appliances or sockets outlets.
• Put off immediately electrical appliances after use.
• Avoid using long trailing flexible cables or codes.
• Never use 2 pin plugs for a 3-wire flexible cable
• Never play near or climb electrical pythons.
• Avoid practical jokes in the workshop because electricity may cost your life.
• Avoid insertion of unauthorized materials in electrical outlets to avoid severe electrical
shock.
Protective clothing
Give reasons why we need protective clothing as engineers and electricians; -
i) To
ii) To
iii) To
iv) To
v) To
The protective clothing expected in the workshop for electrician are: -
Part of the body Protective clothing required
Head Helmet
Eyes Goggles
Nose and mouth Nose and mouth pad
Hands Hand gloves
Feet Heavy rubber soles shoes
Whole body Dust coat or overall
Ears Earpads
Location and operations of safety equipment’s
i. First aid box
First aid kit should be placed in area whereby everybody can be able to access it when needs
arise. These areas can be near the main workshop doors, on the working benches and any area
which is visible to everyone in the workshop.
ii. Fire extinguisher
These are very vital in a workshop; incase fire breaks out. They should be located in areas of
ease accessibility to everyone and especially near the main doors and emergency doors.
N/B- - everybody should know how to operate the available fire extinguishers.
Main causes of accidents
These are the main causes of accidents in the workshop. Their include: -
, ELECTRICAL INSTALLATION NOTES
TOPIC ONE;
SAFETY
OBJECTIVES
1. Identification of workshop safety hazards
2. Identification of electrical safety hazards
3. Explain the correct procedures of handling accidents
a) Identification of workshop safety hazards
• PROTECTIVE CLOTHING
• Care and maintenance of tools, materials and equipment’s
• Location and operation of safety equipment
i. First aid box
ii. Fire extinguishers
iii. Safe working habits
b) Identification of electrical safety hazards
• Dangers of electricity
i. Fire
ii. Burns
iii. Electric shocks
iv. Arcing
v. Explosion
• Sources of electric dangers
i. Bare wires
ii. Carelessness in handling electrical equipment’s
c) Explain the correct procedures of handling accidents in case of: -
• Cuts
• Fire
• Electrical shock
,Safety
Definition; -
➢ Safety is defined as a state of being free from any risks e.g., injury, electric shock, fire,
and damage of equipment’s or machines.
➢ If safety precautions are not observed then accidents are likely to occur which would
result to the above-mentioned risks. Therefore, in any engineering field safety is of great
importance.
Workshop safety regulations
The following are some of the workshop safety precautions to be observed and also in
electrical field: -
• Ensure that you understand instructions before starting any work. If you are in doubt please
ask for clarifications.
• Use the right tools for the right task or job.
• Use tools which are in good conditions
• Keep gangways and access to fire appliances
• Know where the nearest fire exit is and what to do when there is an outbreak of fire.
• Learn how to give first aid treatment for electric shocks.
• Never ran in the workshop.
Safety in the electrical field or workshop
With regard to safety in this field, it is that electricity is a good servant but a very bad master. For
that reason, the electricians have to be good master in order to take full control of electricity
safety. The following rules should be observed in any electrical work be it in installation to avoid
electrical shocks and other associated accidents.
• When carrying out repair on any point of installation, put off the main switch that
supplies that part.
• If not sure of what to do, it is advisable not to do it.
• Observe the color codes when terminating cables.
• Replace fuses with the right sizes of fuses.
• Avoid touching bare conductors or metallic parts with bare hands
, • Don't touch electrical appliances with wet hands or when standing on wet ground.
• Don't not overload sockets outlets by plugging too many appliances in one outlet.
• Replace faulty electrical accessories immediately to avoid more serious accidents.
• Avoid making combustible materials from or near electrical appliances or sockets outlets.
• Put off immediately electrical appliances after use.
• Avoid using long trailing flexible cables or codes.
• Never use 2 pin plugs for a 3-wire flexible cable
• Never play near or climb electrical pythons.
• Avoid practical jokes in the workshop because electricity may cost your life.
• Avoid insertion of unauthorized materials in electrical outlets to avoid severe electrical
shock.
Protective clothing
Give reasons why we need protective clothing as engineers and electricians; -
i) To
ii) To
iii) To
iv) To
v) To
The protective clothing expected in the workshop for electrician are: -
Part of the body Protective clothing required
Head Helmet
Eyes Goggles
Nose and mouth Nose and mouth pad
Hands Hand gloves
Feet Heavy rubber soles shoes
Whole body Dust coat or overall
Ears Earpads
Location and operations of safety equipment’s
i. First aid box
First aid kit should be placed in area whereby everybody can be able to access it when needs
arise. These areas can be near the main workshop doors, on the working benches and any area
which is visible to everyone in the workshop.
ii. Fire extinguisher
These are very vital in a workshop; incase fire breaks out. They should be located in areas of
ease accessibility to everyone and especially near the main doors and emergency doors.
N/B- - everybody should know how to operate the available fire extinguishers.
Main causes of accidents
These are the main causes of accidents in the workshop. Their include: -
