ELECTRICAL SAFETY

Current greater than 75 mA cause:

Ventricular fibrillation (very rapid, ineffective heartbeat).

Prevent exposure to live ____ and ____ by using _____.

Wire Parts Insulation

Use proper ____ and ____.

Wiring Connectors.

Take time to plan your ____ and plan for ____.

Work Safety.

When a _______, ______, or _____ is energized, a potential shock hazard is present.

Circuit Electrical Component Equipment

Current flow through the body of________ or less can be fatal.

0.015 ampere.

Electrocution is the cause of _______ of all workplace deaths. Among young workers aged ________, causing an average of _____ per year.

7% 16-19 10 deaths

Ground

A physical electrical connection to the earth.

Energized (Live, "hot")

A voltage is present that can cause a current. so there is possibility of getting shocked.

AWG

American Wire Gauge- A measure of wire size.

the danger from electrical shock depends on ___,___ and____ of the shocking current through the body.

Amount Duration Path

If there is a small electrical fire, be sure to use only a_____ or _____ fire extinguisher.

Class C Multipurpose (ABC)

Steps to control hazards:

Create a safe workplace Work safely.

Electricity is Dangerous, coming in contact with an electrical voltage can cause ____________, resulting in _________.

Current to flow through the body Electrical shock and burns.

Prevent against ______ or ______ when working live by using proper ____ and _____.

Electric shock Arc blast PPE (Personal protective equipment) Protective tools.

Burns are the most common injury caused by electricity. the three types of burns are:

Electrical burns Arc burns, and thermal contact burns.

An electrical shock is received when ________.

Electrical current passes through the body.

Control contact with_____ and control ____ to create a safe work environment.

Electrical voltage Electrical currents.

There are four main types of electrical injuries:

Electrocution (death due to electrical shock), Electrical shock Burns and Falls

Black and red wires are usually ______, and white wires are usually _____.

Energized Neutral

Prevent _____ to live electrical parts by _____ them

Exposure Isolating

Prevent shocking currents by using _____.

GFCIs.

GFCI

Ground fault circuit interrupter- A device that detects current leakage from a circuit to ground and shuts the current off.

Never use a Three-prong grounding plug with the __________.

Ground prong broken off.

Metal electrical boxes should be ______ to prevent _____.

Grounded Shocks

Electrical shocks, fires or falls result from these hazards:

Inadequate wiring Exposed electrical parts Overhead power lines Defective insulation Improper grounding Overloaded circuits Wet conditions Damaged tools and equipment Improper PPE

Electrical shock may cause _______ or ______.

Injury Death

_____ and _____ circuits and machines.

Lock out Tag out.

You can prevent injuries and deaths by remembering the following points:

Make sure the circuit is de-energized (shut off). Never touch with the wires or conductors. Lock out and tag out circuits. Always assume a conductor is dangerous.

NEC

National electrical code: A comprehensive listing of practices to protect workers and equipment from electrical hazards such as fire and electrocution.

OSHA

Occupational safety and health administration- The federal agency in the U.S. Department of labor that establishes and enforces workplace safety and health regulations.

Avoid _____ power lines.

Overhead.

Prevent ______ by using the right size and type of ____

Overloaded wiring Wire

PPE

Personal protective equipment (Eye protection, hard hat, special clothing, etc.)

The three stages of the safety model are ____,____ and ____.

Recognize hazards (Identify) Evaluate hazards (Evaluate your risk) Control hazards (Take steps to control hazards).

One of the most important things that a service technician must know:

Safety

Prevent _______ from electrical systems and tools by _____.

Shocking currents Grounding

Always ______ to make sure it is _____ before working on it.

Test a circuit. De-energize

Electrical grounding

The ground wire.

Any of these conditions or "Clues", tell you something important:

There is a risk of fire and electrical shock The equipment or tools involved must be taken out of service.

Prevent ______ in circuits by using ______ protection devices.

Too much current Overcurrent.

Use and maintain _____.

Tools properly.

Never _____ a person who is in contact with an electrical source

Touch

You will receive a shock if you _____ and are _____ at same time.

Touch a live wire Grounded

You will receive a shock if you _______ at ______ at _____.

Touch two wires Different voltage The same time

Avoid ____ working conditions and other dangers.

wet.