Vocabulary 131-140

Question 1

Service switch

Answer 1

Main disconnect for the entire electrical system of a building, except for emergency power systems

Question 2

Electrical panel

Answer 2

Board in a cabinet for the switches, fuses & circuit breakers for controlling/protecting branch circuits

Question 3

Circuit

Answer 3

That part of the electrical system of a building that supplies current to a number of outlets for lighting and appliances

Question 4

Circuit breakers

Answer 4

A switch that automatically interrupts an electric circuit to prevent excess current from damaging apparatus in the circuit causing a fire

Question 5

Fire alarm

Answer 5

An electrical system installed in a building to automatically sound an alarm when activated by a fire-detection system

Question 6

Fire detection system

Answer 6

A system of heat and smoke sensors for detecting the presence of fire and automatically signalling an alarm

Question 7

Sprinkler

Answer 7

Pipes under the ceiling connected to a water supply, supplied with valves to open at a specific temperature

Question 8

Standpipe

Answer 8

A water pipe extending vertically through a building to supply water to fire hoses located on every floor

Question 9

Fire damper

Answer 9

A damper that closes an air duct in the event of fire to restrict the of fire and smoke, required where a duct penetrates a fire wall, fire-rated shaft, or other fire separation

Question 10

F.R.R (fire resistance rating)

Answer 10

The time in hours a material or assembly can be expected to withstand expose to fire without collapsing, developing any openings which permit the passage of flame or hot gases, or exceeding a specified temperature on the side away from fire