UFC 3 -520-01
June 10, 2002
Figure F -1. Lighting Plan Showing Phase Rotated HID Luminaires
F-4.1.2 Where rotating machinery is present, minimize or eliminate light source
stroboscopy in an appropriate manner. This can be accomplished by the use of the
above methods. When using HID lamps, supplemental task light using incandescent or
electronically-ballasted fluorescent sources should be added at the rotating equipment
task location. In some cases, specialized lighting might be required for safety, and will
be usually identified by the equipment manufacturer, operating manual, or by
observation of operating conditions.
Source Color (Chromaticity).
F-4.2.1 Select the correlated color temperature (CCT) of electric lamps to be
appropriate for the application. If possible, select all light sources within the same
space with similar color temperature. Appropriate color temperatures are listed in Ta ble
F-1, but can be different depending upon specific application situations.
F-4.2.2 People tend to prefer higher color temperature of light with higher light levels.
The acceptable CCT is a range, and not an exact value. Table F -1 serves as a guide.