| Lytecaster® Recessed Downlighting 2095 |
Page 2 of 2 | 3 3/4" Aperture Deep Anodized Wall Washer Reflector Trim |
Lighting Data
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18" | 2 |
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12 f.c. |
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12 f.c. |
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lighting data
Example: With clear Alzak® and60W BT15 units, located 18" from wall and 2' on center, (matching downlights 2' on center), the illumination on the wall 3' down from the ceiling is 12 f.c. beneath and 12 f.c. between fixtures.
Footcandles on Wall From Multiple Units 60W BT15 Clear Alzak®
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| units 18 inches from wall |
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| 30” |
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ft. |
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| 18" |
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| 24" |
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1 | 9 | 7 | 9 | 8 | 4 | 8 |
| 8 | 2 | 8 |
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ceiling, |
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2 | 20 | 20 | 20 | 15 | 15 | 15 |
| 13 | 11 | 13 |
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3 | 16 | 16 | 16 | 12 | 12 | 12 |
| 10 | 10 | 10 |
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from | 4 | 11 | 11 | 11 | 9 | 9 | 9 |
| 7 | 7 | 7 |
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5 | 8 | 8 | 8 | 6 | 6 | 6 |
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distance |
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6 | 5 | 5 | 5 | 4 | 4 | 4 |
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7 | 4 | 4 | 4 | 3 | 3 | 3 |
| 3 | 3 | 3 |
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8 | 3 | 3 | 3 | 2 | 2 | 2 |
| 2 | 2 | 2 |
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| 9 | 2 | 2 | 2 | 2 | 2 | 2 |
| 2 | 2 | 2 |
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Footcandle values are averaged and rounded off and are based on a minimum of five units.
candlepower Curve
Down | Report 1266FR | Wall |
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| Efficiency = 33.6% |
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| Downlight Spacing Ratio = 1.2 |
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| COEFFICIENTS OF UTILIZATION |
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| % effective ceiling cavity reflectance |
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| 80 |
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| 70 |
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| 50 |
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| 30 |
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| 10 |
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| % wall reflectance |
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| 50 | 30 | 10 | 50 | 30 | 10 |
| 50 | 30 | 10 | 50 | 30 | 10 | 50 | 30 | 10 | 0 |
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| 1 | .37 | .37 | .36 | .37 | .36 | .35 |
| .35 | .35 | .34 | .34 | .34 | .33 | .33 | .33 | .32 | .32 |
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ratio | 2 | .35 | .33 | .32 | .34 | .33 | .32 |
| .33 | .32 | .31 | .32 | .31 | .31 | .31 | .31 | .30 | .29 |
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3 | .32 | .31 | .29 | .32 | .30 | .29 |
| .31 | .30 | .29 | .30 | .29 | .28 | .28 | .28 | .28 | .27 |
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cavity | 4 | .30 | .28 | .27 | .30 | .28 | .27 |
| .29 | .27 | .26 | .28 | .27 | .26 | .28 | .27 | .26 | .25 |
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5 | .28 | .26 | .24 | .28 | .26 | .24 |
| .27 | .25 | .24 | .26 | .25 | .24 | .26 | .25 | .24 | .23 |
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| 6 | .26 | .24 | .22 | .26 | .24 | .22 |
| .25 | .23 | .22 | .25 | .23 | .22 | .24 | .23 | .22 | .21 |
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Room | 7 | .24 | .22 | .20 | .24 | .22 | .20 |
| .23 | .21 | .20 | .23 | .21 | .20 | .22 | .21 | .20 | .19 |
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8 | .22 | .20 | .19 | .22 | .20 | .18 |
| .21 | .20 | .18 | .21 | .19 | .18 | .21 | .19 | .18 | .18 |
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| 9 | .20 | .18 | .17 | .20 | .18 | .17 |
| .20 | .18 | .17 | .20 | .18 | .17 | .19 | .18 | .17 | .16 |
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| 10 | .19 | .17 | .15 | .19 | .17 | .15 |
| .18 | .17 | .15 | .18 | .16 | .18 | .18 | .16 | .15 | .15 |
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20% Floor cavity reflectance
To convert lighting data for a lower wattage incandescent lamp of the same type, multiply the footcandle (or candlepower) values by the ratio of the lumens of the two lamps.The coefficients of utilization remain the same.
Job Information | Type: |
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Lightolier a Genlyte company | www.lightolier.com |
631 Airport Road, Fall River, MA 02720 • (508)
© 2006 Genlyte Group LLC • E0906
