electrical safety

BEH MING SHUEN

3A6 2021

Teacher:
Pn. Chan Yoke Bee

causes of

short circuits

LOOSE CONNECTIONS

If wire attachments loosen and sag, two wires may encounter each other
and create a short circuit. If you notice a hot wire and a neutral wire
touching, don’t tighten the wires yourself; you could be severely shocked.
Call an electrician to fix the issue for you.

AGING AND OUTDATED WIRING

Wires and wire insulation will experience wear and tear over time. The
typical lifespan of an electrical system is 30–40 years. If your system is
older than this, it may no longer be safe.

FAULTY APPLIANCE WIRING

Short circuits can occur in appliances by means of a faulty plug, faulty
power cord, or a flaw in the appliance itself.

DAMAGED INSULATION

Hot and neutral wires are designed with insulation to prevent the two wires
from touching and creating a short circuit. Over time, however, this
insulation can wear down or become damaged.

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WATER

Water is a conductor of electricity and can be extremely dangerous when
put into contact with an electrical current.

FAULTY WIRING

Faulty wiring can occur for many reasons, including poor quality
electricals, badly installed wiring or an overused cable that has split,
causing the wires to become visible. Faulty wiring can lead to electric
shocks, burns or severe injuries, so it is essential that you are confident
that your wiring is secure and safe.

ATTEMPTING TO FIX ELECTRICALS

By attempting to fix electrical equipment without any training, you can put
yourself at serious risk of an electric shock and can put others in danger of
an electrical fire.

NAKED CORDS & DAMAGED PLUGS

Damaged cords can occur when an electrical appliance is overused, and
the cord splits, exposing the wires inside. This can be extremely dangerous
as the rubber cover over the wire is designed to protect the electrical
current from water and other potential risks, which means that a naked
cord is at risk of sparking, causing injury or even a fire.

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AVOID WATER AT ALL TIMES WHEN WORKING
WITH ELECTRICITY.

NEVER USE EQUIPMENT WITH FRAYED CORDS,
DAMAGED INSULATION OR BROKEN PLUGS.

IF YOU ARE WORKING ON ANY RECEPTACLE AT
YOUR HOME THEN ALWAYS TURN OFF THE
MAINS.

ALWAYS USE INSULATED TOOLS WHILE
WORKING.

ALWAYS USE APPROPRIATE INSULATED RUBBER
GLOVES AND GOGGLES WHILE WORKING ON
ANY BRANCH CIRCUIT OR ANY OTHER
ELECTRICAL CIRCUIT.

Steps to be taken when

an electric shock occurs

TURN OFF THE SOURCE OF ELECTRICITY, IF
POSSIBLE. IF NOT, MOVE THE SOURCE AWAY
FROM YOU AND THE PERSON, USING A DRY,
NONCONDUCTING OBJECT MADE OF
CARDBOARD, PLASTIC OR WOOD.

BEGIN CPR IF THE PERSON SHOWS NO SIGNS OF
CIRCULATION, SUCH AS BREATHING,
COUGHING OR MOVEMENT.

TRY TO PREVENT THE INJURED PERSON FROM
BECOMING CHILLED.

APPLY A BANDAGE. COVER ANY BURNED AREAS
WITH A STERILE GAUZE BANDAGE, IF
AVAILABLE, OR A CLEAN CLOTH. DON'T USE A
BLANKET OR TOWEL, BECAUSE LOOSE FIBRES
CAN STICK TO THE BURNS.

DON'T TOUCH THE INJURED PERSON IF THEY ARE
STILL IN CONTACT WITH THE ELECTRICAL
CURRENT.