Training Buletins

Question 1

electrical accidents in the United States account for over ____ deaths a year

Answer 1

700

Question 2

OSHA statistics indicate that electrocution accounts for ___ % of worker deaths annually.

Answer 2

12%

Question 3

NIOSH statistics also document that over the last 20 years, electrocutions to first responders have resulted in more than ____ deaths in the fire service.

Answer 3

25

Question 4

The Los Angeles Fire Department (LAFD) resources respond to over ______ electrocutions, wires down, and other electrical emergencies annually

Answer 4

3,000

Question 5

The Los Angeles Fire Department (LAFD) resources respond to over 3000 electrocutions, wires down, and other electrical emergencies annually

Answer 5

3,000

Question 6

Current flow, or electron flow, is what flows on a wire or conductor like water flowing down a river.

Answer 6

AMPS

Question 7

Quantity of electricity is expressed in __________? conversely, water is measured in gallon per minute(gpm).

Answer 7

AMPERES

Question 8

_______ is the difference in electrical potential between two points in a circuit. It is the push or pressure behind current flow through a circuit.

Answer 8

VOLTAGE

Question 9

Electrical pressure is measured in volts, while the comparable term in water hydraulics would be what?

Answer 9

pounds per square inch (psi).

Question 10

The measure of ____ volts. A measure commonly used by Los Angeles Department of Water and Power (LADWP) and in the electricity provider industry.

Answer 10

1,000

Question 11

Electrical resistance is measured in ____?

Answer 11

OHMS

Question 12

Ohm’s Law defines the relationships between power (watts), voltage (volts), current (Amps), and resistance (ohms)

Answer 12

One ohm is the resistance value through which one volt will maintain a current of one ampere.

Question 13

Watts = amps x volts

Amps = watts x volts

Volts =

Answer 13

Watts = amps x volts

Amps = watts x volts

Volts = watts x amps

Question 14

Power is the amount of current times the voltage level at a given point measured in?

Answer 14

WATTS

Question 15

Extremely high voltage is voltage in excess of ______ volts

Answer 15

60,000

Question 16

High voltage is from _____ volts up _____ volts. Usually found in customer distribution system.

Answer 16

600 volts up to 59,999

Question 17

Usually below ____ volts. These are called secondary circuit voltage and commonly referred to as “secondary”.

Answer 17

600

Question 18

ELECTRICITY FIRE HYDRAULICS

Conductor = Hose

Current = Water

Voltage = Pressure

Amperes = Gallons per minute

Ohms = Friction Loss

Answer 18

.

Question 19

The LADWP system is comprised of over _______ transformers, over _________ poles and 1000’s of substructures and switches…

Answer 19

50,000

250,000

1,000

Question 20

Strings of insulators on transmission towers can range from _____ to _____ feet long depending on the voltage they are trying to hold back from contacting the towers that support them

Answer 20

3 to 20 feet

Question 21

The LADWP also has a number of transmission lines with voltages of_____ or ______ ?

Answer 21

138 k.v. To 230 Kv

Question 22

The LADWP has _____ receiving stations which receive the electricity at transmission voltages at ____ to ____ and step the voltage down to____, which is referred to as sub-transmission

Answer 22

21

138kv to 500kv

34.5 kv

Question 23

There are over _____ distribution stations where the electricity is received at_____ kv and stepped down to___ kv. This is the voltage known as primary circuit voltage

Answer 23

150

34. 5 kv
35. 8 kv