Chapter 2: Pre-Installation Planning
Method 2
The lamp is Energy Star and the power factor is not given and the number of watts is given by the light
manufacturer for one lamp.
Set PF = 0.75 when a lamp is higher than 5 watts in the formulas used in Method 1.
Method 3
The current and the lamp power is given by the manufacturer for one lamp.
Method 4
The current and the lamp power is given by the manufacturer for one lamp and the power factor is not in
the product range (between 0.5 and below 1).
Light type
Lamp Power Factor (PF)
LED lamp or CFL/CCFL lamp
0.95
LED lamp or CFL/CCFL lamp
0.85
Energy Star LED lamp or CFL/CCFL lamp
0.75
38
890–00687 EDGE 2
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