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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-36 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.