Flashcards in Chapter 8 Deck (40)
___________ is defined as the unintended, and often sudden, release of stored, residual, or potential energy that will cause harm if contacted.
The integrity of electrical systems is based on their being properly _______, __________ and ___________.
Electricity is always trying to seek the path of _________ to ground.
Firefighters attempting to approach compromised electrical equipment may feel a tingling sensation in their feet; this is a danger sign known as _____________.
Treat all downed power lines as ___________.
Keep a safe distance from downed power lines - at least ________.
Electrical transmission and distribution substations use large ______ to step down voltage.
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.
Individual turbine blades can be _________ long, creating a rotational diameter and danger zone of more than _______.
60 - 130 ft.
The tips of a 60 foot long blade are actually traveling at more than ________.
Older, internally located transformers may still contain ___________ - a very toxic carcinogen
_______ runs are typically located behind interior wall, floor and ceiling coverings.
________ systems can include backup generators, battery banks, or alternative power supplies, such as solar systems.
... These batteries are typically on a slow charging system, creating ________ as a by-product.
Solar energy is used in two ways:
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.
PV systems include an additional roof dead load of _____ per square foot.
3 - 5 pounds
A standard 3-foot by 40foot PV panel weighs approximately ______ pounds.
Solar thermal panels can be distinguished from PV panels by the ______ that is connected to the panel.
Solar heating systems have an additional roof dead load of _____ per square foot.
5 - 8 pounds
The most important utility to control is _______>
The most common utility gases are ______ and _________.
natural gas (methane)
Pressurized systems use either _______ (liquids) or _________ (air/gases) as a medium to achieve power or force.
Bright orange conduit or cable can indicate high-voltage power (up to _____ volts and _____ amps) is used in the drivetrain of a vehicle
_________ conduits or cables can indicate medium-voltage drivetrains (less than high-voltage systems but more than typical 12 or 24-volt systems)
CNG labels are standardized as a ____ diamond with the words "CNG", "LNG" within the diamond.
Propane-powered vehicles should have a _______ diamond with "Propane" or "LPG" within.
Of all the weather considerations affecting firefighting operations, _____ is by far the most important.
Wind is created as air masses attempt to reach ___________.