Electrical

Question 1

What are the types of electrical injuries?

Answer 1

Direct

Indirect

Question 2

What are the ways to produce electricity?

Answer 2

DC: batteries, static, and lightening

AC: generator made - frequency is measured in cycles per second (hertz)

Question 3

What frequency is power in the US? International?

Answer 3

US 60 Hz

International 50 Hz

Question 4

What is the voltage in the US? International?

Answer 4

US 120v

International 240v

Question 5

What is the “West Virginia” formula?

Answer 5

Watts = Voltage x Amps

Question 6

How far must the grounding rod be in the ground?

Answer 6

8 feet

Question 7

What diameter should the grounding rod be?

Answer 7

1/2”

Question 8

What’s the maximum percentage of the breaker’s capacity that the continuous load can be?

Answer 8

80%

Question 9

How long is the continuous load on a circuit?

Answer 9

3 or more hours

Question 10

What are the voltage drop amounts and distances?

Answer 10

3 volts over 10 feet

10 volts over 100 feet

Question 11

Types of switches

Answer 11

Single pole
2-pole for 240v
3-way
4-way