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Table 3
LFTF Lighting Test Results: F40 T-12 Fixtures

Lamp

Ballast

 F40T12

MD

 F40T12

MD

 F40T12

MD

 F40T12

ED10

 F40T12

ED

 F40T12

ED
Troffer

Diffuser

 Std

Pris

 Par-Refl

Open

 Std-Refl

Pris

 Par

Open

 Std

Pris

 Par-Refl

Open
Power (Watts)

Day (9 AM - 5 PM)

Night (10 PM - 5 AM)

Avg (24-hr)

 64.8

94.3

80.6



84.2

106.6

97.2

116.3

129.3

123.8

79.8

116.5

101.3

60.4

125.5

102.2

77.8

115.0

99.8
Illuminance (Decalux)

Day (9 AM - 5 PM)

Night (10 PM - 5 AM)

Avg (24-hr)

45.8

24.2

32.8

59.8

43.6

51.3

85.6

52.2

69.2

51.1

37.1

42.7

46.03

47.4

46.3

53.5

38.7

44.7
Efficacy (Decalux/Watt)

Day (9 AM - 5 PM)

Night (10 PM - 5 AM)

Avg (24-hr)

87.3

31.7

50.3

87.7

50.5

65.2

90.9

49.9

69.1

79.1

39.4

52.1

94.2

46.7

56.0

84.9

41.6

55.3
Power Quality (Power Factor)

Min

Max

Avg

0.71

0.86

0.75

0.72

0.91

0.88

0.70

0.85

0.83

0.97

1.01

1.00

0.89

0.99

0.97

0.96

1.01

1.00
Temperature oC

Bulb

Ballast

Fixture

33.5

33.6

22.8

34.4

39.5

26.1

41.3

41.3

24.0

30.1

36.7

25.1

39.2

45.1

23.1

30.7

37.9

27.5

1 Magnetic Ballast 3 Magnetic Dimming Ballast 5 Standard Troffer 7 Standard Troffer w/Reflector 9 Tandem-wired 4-lamp Ballast

2 Electronic Ballast 4 Open Parabolic Troffer 6 Parabolic Troffer w/Reflector 8 Prismatic Diffuser 10 Electronic Dimming Ballast


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