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Flashcards in Chapter 8 Deck (40)
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1

___________ is defined as the unintended, and often sudden, release of stored, residual, or potential energy that will cause harm if contacted.

Hazardous Energy

2

The integrity of electrical systems is based on their being properly _______, __________ and ___________.

Grounded
Insulated
Circuit Protected

3

Electricity is always trying to seek the path of _________ to ground.

least resistance

4

Firefighters attempting to approach compromised electrical equipment may feel a tingling sensation in their feet; this is a danger sign known as _____________.

ground gradient

5

Treat all downed power lines as ___________.

energized

6

Keep a safe distance from downed power lines - at least ________.

10 feet

7

Electrical transmission and distribution substations use large ______ to step down voltage.

transformer

8

High-tension wires that separate from anchor points can "________" with tremendous force; that is, when the tension is released suddenly, the wire snaps, or whips, in a direction opposite to the tension force.

reel coil

9

Individual turbine blades can be _________ long, creating a rotational diameter and danger zone of more than _______.

60 - 130 ft.

300 ft.

10

The tips of a 60 foot long blade are actually traveling at more than ________.

70 mph

11

Older, internally located transformers may still contain ___________ - a very toxic carcinogen

Poly-Chlorinated Biphenyls

12

_______ runs are typically located behind interior wall, floor and ceiling coverings.

Romex

13

________ systems can include backup generators, battery banks, or alternative power supplies, such as solar systems.

UPS

14

... These batteries are typically on a slow charging system, creating ________ as a by-product.

hydrogen gas

15

Solar energy is used in two ways:

Electrical generation

thermal heating

16

Solar electrical generation system,s include an array of ______ panels that collect light energy from the sun to stimulate electrons in a silicon crystal or film.

photovoltaic

17

PV systems include an additional roof dead load of _____ per square foot.

3 - 5 pounds

18

A standard 3-foot by 40foot PV panel weighs approximately ______ pounds.

40

19

Solar thermal panels can be distinguished from PV panels by the ______ that is connected to the panel.

piping

20

Solar heating systems have an additional roof dead load of _____ per square foot.

5 - 8 pounds

21

The most important utility to control is _______>

gas

22

The most common utility gases are ______ and _________.

propane

natural gas (methane)

23

Pressurized systems use either _______ (liquids) or _________ (air/gases) as a medium to achieve power or force.

hydraulics

pneumatics

24

Bright orange conduit or cable can indicate high-voltage power (up to _____ volts and _____ amps) is used in the drivetrain of a vehicle

700

125

25

_________ conduits or cables can indicate medium-voltage drivetrains (less than high-voltage systems but more than typical 12 or 24-volt systems)

Bright Blue

26

CNG labels are standardized as a ____ diamond with the words "CNG", "LNG" within the diamond.

blue

27

Propane-powered vehicles should have a _______ diamond with "Propane" or "LPG" within.

Black

28

Of all the weather considerations affecting firefighting operations, _____ is by far the most important.

wind

29

Wind is created as air masses attempt to reach ___________.

equilibrium

30

A falling _______ can indicate an approaching storm and subsequent wind.

barometer