All electrical systems have the potential to cause harm. The voltage of the electricity and the available electrical current in regular businesses and homes has enough power to cause death by electrocution. Even changing a light bulb without unplugging the lamp can be hazardous because coming in contact with the "hot", "energized" or "live" part of the socket could kill a person.
There are systems and devices in place that reduce the risk of human injury. These include fuse boards, earthing and bonding and RCDs. There are also periodic inspections that should be performed both by the user and by certified electricians. It is important that you understand these systems and perform these inspections, and that if you ever have any doubts, you contact a certified electrician for advice.
Each year between 2 and 3 million people in Great Britain receive an electrical shock from mains voltage.
Of those, approximately 350,000 get seriously hurt. Injuries include:
Severe pain, skin burn without scarring, bruising from a fall or severe muscular contraction, temporary blindness, heartbeat disturbance, persistent pain or numbness, higher blood pressure, skin burn with scarring, broken bone(s), difficulty breathing.
About 30 die.
Please take care and take action to protect yourself and your family and friends. Don't be a statistic.
(Data taken from electrical safety first)