Emergencies Involving Electricity Flashcards
The flow of electric charge though a conductor placed between two objects having a deference in voltage.
Electricity
_____ is a measure of the “pressure” that pushes the electric charge through a conductor.
Voltage
An object with any voltage above zero is called
Energized
Low voltage is more
dangerous
If anyone is in a vehicle that is in contact with a wire, the safest thing he can do is
stay inside.
If possible, he should
drive the vehicle away from the contact.
The National Board of Fire underwriters’ Special Interest Bulletin No 91 advises that for 120 volt facilities
there is no danger unless the nozzle is brought within a few inches.
Minimum Operating Distance
Solid =
40 ft up to 34 KV
Minimum Operating Distance
Fog=
6 ft up to 34 KV
11 ft up to 220 KV
Pole mounted facilities generally have nominal voltages ranging from ____ to _____
120 to 34,000 KV
The wires for the highest voltage in this range are generally mounted ____ feet or more above the ground.
30 feet
At least ___ feet of separation should be maintained to ensure a safe operation when using a solid water stream on electric facilities that may be energized.
40
____ and ____ are non conductive and may be used around energized facilities.
Dry chemical and carbon dioxide
Low voltage installations, those below ___ volts, exist in practically every building a fire fighter may enter.
600 volts
Cut wires only to
PROTECT LIFE