T2 Part 15 Lighting For Industrial & Commercial Flashcards
What does GLS stand for?
General Lighting Service
GLS lamp life expectancy?
1000 hours
What is the most commonly used lamp in Ireland *
GLS Lamp
life expectancy of a fluorescent lamp?
8000 up to 15,000 hours
tungsten halogen lamp is operated ‘ above ‘ the rated voltage what will the result be?
Higher light output and shorter life
Tungsten halogen lamp is operated ‘below’ the rated voltage what will the result be? *
Lower light output and shorter life
If I tungsten halogen lamp becomes dirty what will the result be?
Cause fine cracks and premature failure
Extra low voltage lamps generally operation at what voltage?
12v
Extra low voltage lamps have a life expectancy of how many hours?
3000 hours
F Triangle symbol
Equipment is suitable for mounting in flammable material
With regard to fluorescent lighting what gives the light its color?
Fluorescent powder on the inside of the lamp
The capacitor in parallel with the incoming supply on a fluorescent light performs what function?
Power factor correction
The choke or ballast on a fluorescent light perform what function?
Limits the current
What is the de-rating factor for equipment used to switch inductive Loads?
0.8
What is the de-rating factor for equipment used to switch inductive Loads?
0.8
What does PIR stand for?
Passive infra red
PIR detects
Heat and movement
The gas normally used to fill an Halogen lamp is?
Halogen
Is through wiring in a luminaire permitted?
Only if the luminaire is specifically designed for this purpose
What distance should a 60-watt incandescent spotlight be located from a flammable material?
0.6 Metre
Why would an emergency lighting discharge test be performed?
To ensure the batteries last for the required duration In the event of a power failure
A maintained emergency light performs which functions?
Is on during normal service and is on in the event of a power failure
Philips S10
Fluorescent fitting Starter
