Electrical Arcs & Blasts
Understand the hazards of electrical arcs and blasts and how to protect yourself from injury.
Electrical Arcs & Blasts
General Information
Electrical arcs and blasts are a potential danger when working with most electrical devices. Depending on the voltage and the distance from the main power supply, arcs can cause severe injury, third-degree burns and even death.
The Causes
• An arc is created by a short-circuit, most often when non-insulated tools come in contact with a live electrical current.
• The heat of an electrical arc can exceed 10,000-F—which is 1,000-F greater than the surface of the sun.
• The blast which accompanies an arc is created by the superheating of air in the vicinity. The force produced can equal the force of an exploding bomb.
Possible Outcomes
• Cardiac arrest
• Muscle, nerve, and tissue destruction
• Thermal burns
• Death
Safety Tips
• Make use of personal protective clothing, such as flash suits, face shields and appropriately insulated gloves.
• Use insulated tools.
• Always work under the direct supervision of a trained electrician.