Photometrics
Proper illumination levels are a key factor in the design of any emergency
lighting system. In a layout of any such system, it is important to note the
effect of voltage loss on any illumination source. In the following example, a
25-watt sealed beam
lamp is shown under three conditions: (1) Bulb Design Voltage; (2) Nominal
System Voltage; and (3) End of Code Voltage.
1. Bulb Design Voltage: 6.4V
2. Nominal System Voltage: 6.0V
3. End of Code Voltage: 5.25V
20 Watt Halogen, Lamp #H7554 25 Watt, Lamp #4510
High Intensity Tungsten Lamps
6 Watt, Lamp #939
PAR-46 Sealed Beam Lamps
8 Watt, Lamp #7613
8 Watt Halogen, Lamp #H7551
12 Watt Halogen, Lamp #H7553
18 Watt, Lamp #4014
25 Watt, Lamp #4510
PAR-46 Sealed Beam Lamps
25 Watt, Lamp #4013
21 Watt, Lamp #4606
35 Watt, Lamp #4413
Special lamp wattages are available on emergency lights by indicating the
wattage as a suffix to the model number (Ex. 2LT6S50-S18). The Halogen lamp
designator is included as a prefix to the model number (Ex. H2LT6S50-12).
Please refer to
individual catalog pages for more information on using special lamp wattages.