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APPENDIX
Schedule of spread and intensity for spotlights
Plano-convex: Maximum Candle Power
Watts Lens Beam Spread
Spot O Med. O Flood
250........ 5X 9 10,000 15 2,000 30 1,000 60
400........ 5x 9 20,000 15 3,500 30 1,700 60
500........ 6x10 48,000 10 5,000 25 2,500 45
1000....... 6x10 90,000 10 11,000 25 4,500 45
1500....... 8x12 135,000 10 40,000 30 10,000 50
2000....... 8X12 195,000 10 55,000 30 14,000 50
Fresnel:
Candle Power at various beam spreads
100 Watt 3X2 1/2 4,000 15 2,500 25 1,000 40
250 Watt 6x3 1/2 25,000 15 6,500 40 3,000 60
500 Watt 6x3 1/2 60,000 15 14,000 40 7,200 60
750 Watt 6x3 1/2 72,000 15 22,000 40 8,000 60
1000 Watt 8x4 3/4 100,000 15 55,000 25 25,000 45
1500 Watt 8x4 3/4 160,000 15 80,000 25 38,000 45
2000 Watt 1OX5 3/4 220,000 15 100,000 25 45,000 45
5000 Watt 14x8 600,000 15 300,000 25 100,00 45
Ellipsoidal:
Candle Power and beam spread
Center edge degree-spread
500 2-- 4 1/2x6 1/2 P.C. 11,400 5,000 48
500 2-- 6 x 9 P.C. 23,000 3,000 35
750 2-- 6 x g P.C. 28,000 4,000 35
500 2-- 6 x 8 Step 18,000 2,000 40
750 2-- 6 x 8 Step 23,000 3,000 40
500 2-- 6 x11 Step 30,000 3,500 30
750 2-- 6 x11 Step 44,000 5,000 30
500 1-- 6 x 6 Step 35,000 5,000 25
750 1-- 6 x 6 Step 55,000 6,000 25
750 1-- 8 x10 P.C. 85,000 10,000 18
750 1-- 8 x 9 Step 90,000 15,000 20
1000 1-- 8 x 9 Step 90,000 15,000 23
2000 1-- 8 X 9 Step 160,000 30,000 23
3000 1--12 X20 Step 650,000 400,000 12
5000 1--12 x20 Step 850,000 550,000 12
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