Lighting Info

Database compiled from lots of sources by chromakinetics.com

Table of Contents

• Cable Specs
• Cable Amp Ratings
• Amp Ratings for Feeders
• Gel Info
• Gel Cross Reference
• Gobo Sizes
• Gobo Sizes for Fixtures
• PAR lamps
• Fresnel Beam Spreads
• ERS Beam Spreads
• ERS Beam Diameter vs Throw
• Power Formulas
• Cable Voltage Drop
• Unit Conversions
• Beam Calculations
• DMX Address Calculator

Cable Specs

Cable Amp Ratings

Amp Ratings for Feeders

These ampacities are permitted for single conductor types SC, SCE, SCT and W cable
only where the individual conductors are not installed in a raceway and are not in physical
contact with each other except in lengths not to exceed 24 inches where passing through
the wall of an enclosure. -1996 NEC
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Gel Info

Roscolux

Rosco has approximately 170 colors and frosts listed in their Roscolux swatch book.  Many more items are available in their Cinegel and CalColor swatch books.  Their numbering system is starting to get a little scattered but falls into these basic (and subjective) categories: 
1-24:  Ambers and Yellows. 
25-27:  Reds 
30-339: Pinks 
40-342:  More Reds 
43-46:  More Pinks 
47-359:  Purples and Lavenders 
60-385:  Blues 
86-96:  Greens 
97-98:  Grays 
99:  Chocolate 
100-163:  Frosts 
3202-3318:  Color Correction 
Note the 300 series colors are listed with the sub 100 series colors.  This is because 300 series colors are the newer (and some say sexier) Rosco colors.  So if you were flipping through their swatch book it would go 60-No color blue, 360 Clearwater, 61 Mist Blue, 62 Booster Blue, 362 Tipton blue, 63 Pale Blue, etc.& Top

Lee

2-90:  Similar to Roscolux colors of the same number 
100-198:  Similar to Cinemoid colors.  Subtract 100 from the Lee color to get the Cinemoid color number. 
200-299:  Color corection and diffusion 
322-366:  More colors 
400-452:  More color correction and diffusion 
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GAM

10's:  Diffusion 
100's:  Magenta 
200's:  Red 
300's:  Orange 
400's:  Yellow 
500's:  Yellow Green 
600's:  Green 
700's:  Blue Green 
800's:  Blue 
900's:  Violet 
1500's:  Color correction
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Gel Cross Reference

Basic table from Rosco.com - additional info added by TLS,Inc

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Gobo Sizes

Notes:
1 as defined by Rosco and DHA. GAM define a "G" size gobo, which is much smaller
2 with notch to facilitate insertion in gobo wheel

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Gobo Sizes for Fixtures

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PAR lamps

• PAR 36: Practically all the PAR 36 fittings are standard disco pinspot type with the very narrow beam 6V 30W bulb. Most typical bulb used is VNSP bulb type 4515, which has 5 degrees beam and uses 6V 30W. The PAR 36 cans almost always have a transformer built in, and the bulb has screw terminals on the back. There are also other more rerely used special PAR 36 lamps used (12V models, up to 100W models etc.). PAR 36 lamp diameter is 4.3 inches (around 110 mm). PAR36 lamps come in a mega range of odd ball voltages and powers for things like marine and aircraft (for example 28V ACL version). Generally PAR36 lamps are a bit shortlived on continuous duty.
• PAR 38: PAR 38 lamp diameter is around 4.75 inches (around 120 mm). This type of bulbs have typically ES Edison Screw cap. Typical lamp power levels available are 60, 75, 80, 100, 150 and 300 watts. Typical beam spreads are 30 and 60 degrees (special 12 degree bulbs exist also). This type of lamps are common in shop display fittings and security lights, also in outdoor garden lighting (special bulb version for outdoor use).
• PAR 46: PAR 46 lamp diameter is around 5.75 inches (around 146 mm). Typical lamp power is around 200W. Bulb has blade connectors.
• PAR 56: PAR 56 lamp diameter is around 7 inches (around 178 mm). Typical lamp power is 300W. Bulb has blade connectors. Typical beam spread is 11x25 degrees. Different beam spreads are available. PAR56 lamps are typically available at 300W and 500W power.
• PAR 64: PAR 56 lamp diameter is around 8 inches (around 203 mm). Typical lamp power is 500W or 1000W. Bulb has blade connectors. Typical beam spread is 11x25 degrees. Different beam spreads are available. - MFL: ("Miffle") Medium Flood: 7 major lines in a criss-cross pattern. - WFL: ("Wiffle") Wide Flood: Many more than 7 major lines in a criss-cross pattern. - NSP: ("Nisp") Narrow Spot: Fuzzy - VNSP: ("V-Nisp") Very Narrow Spot: Clear

PAR64 Lamp Data

Par 64 Lamp Beam Data

Fresnel Beam Spreads

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ERS Beam Spreads

• 6x9 - 37 degrees
• 6x12 - 27 degrees
• 6x16 - 19,25 degrees
• 6x22 - 11,15 degrees
• 8x9 - 20 degrees
• 8x13 - 13 degrees
• 10x20 - 15 degrees

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ERS Beam diameter as a function of throw distance

----------------------------------------------------------------------        
D.in|                         ANGLE (in degrees)
 ft.|   10    15    20    25    30    35    40    45    50    55    60             
----------------------------------------------------------------------       
 5  |   .9   1.4   1.8   2.3   2.7   3.2   3.6   4.1   4.5   5.0   5.4         
10  |  1.8   2.7   3.6   4.5   5.4   6.3   7.2   8.1   9.0   9.9  10.8         
15  |  2.7   4.0   5.4   6.8   8.1   9.5  10.8  12.2  13.5  14.9  16.2         
20  |  3.6   5.4   7.2   9.0  10.8  12.6  14.4  16.2  18.0  19.8  21.6         
25  |  4.5   6.8   9.0  11.3  13.5  15.8  18.0  20.3  22.5  24.6  27.0         
----------------------------------------------------------------------        
30  |  5.4   8.1  10.8  13.5  16.2  18.9  21.6  24.3  27.0  29.7  32.4         
35  |  6.3   9.5  12.6  15.8  18.9  22.0  25.2  28.4  31.5  34.7  37.8         
40  |  7.2  10.8  14.4  18.0  21.6  25.2  28.8  32.4  36.0  39.6  43.2         
45  |  8.1  12.2  16.2  20.3  24.3  28.4  32.4  36.5  40.5  44.6  48.6         
50  |  9.0  13.5  18.0  22.5  27.0  31.5  36.0  40.5  45.0  49.5  54.0         
----------------------------------------------------------------------        
55  |  9.9  14.6  19.8  24.8  29.7  34.7  39.6  44.6  49.5  54.5  59.4         
60  | 10.8  16.2  21.6  27.0  32.4  37.8  43.2  48.6  54.0  59.4  64.8         
65  | 11.7  17.6  23.4  29.3  35.1  41.0  46.8  52.7  58.5  64.4  70.2         
70  | 12.6  18.9  25.2  31.5  37.8  44.1  50.4  56.7  63.0  69.3  75.6         
75  | 13.5  20.3  27.0  33.8  40.5  47.3  54.0  60.8  67.6  74.3  81.0         
----------------------------------------------------------------------        
80  | 14.4  21.6  28.8  36.0  43.2  50.4  57.6  64.8  72.0  79.2  86.4         
85  | 15.3  23.0  30.6  38.3  46.0  53.6  61.2  68.9  76.5  84.2  91.8         
90  | 16.2  24.3  32.4  40.5  48.6  56.7  64.8  72.9  81.0  89.1  97.2         
95  | 17.1  25.7  34.2  42.8  51.3  59.9  68.4  77.0  85.5  94.1 102.6         
100 | 18.0  27.0  36.0  45.0  54.0  63.0  72.0  81.0  90.0  99.0 108.0       
---------------------------------------------------------------------- 

Power Formulas

Power:
Watts = Volts * Amps
Amps = Watts / Volts

Sine Wave (VAC):
RMS Volts = 0.707 x Peak Volts
RMS Volts = 1.11 x Average Volts
Peak Volts = 1.57 x Average Volts
Peak Volts = 1.414 x RMS Volts
Average Volts = 0.637 x Peak Volts
Average Volts = 0.9 x RMS Volts
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DC voltage drop of cable

V = voltage drop, I = current
R = resistance of conductor per 1000 feet
L = length of conductor in feet
R for 18awg = 6.51, 16awg = 4.09, 14awg = 2.58
12awg = 1.62, 10awg = 1.02, 8awg = 0.64

V = I * L * (R / 1000) * 1.004
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Unit conversions

inches = millimeters / 25.4
millimeters = inches * 25.4
feet = meters / 0.3048
meters = feet * 0.3048

footcandles = lux / 10.8
lux = footcandles * 10.8

Centigrade = 0.556 * (Fahrenheit - 32)
Fahrenheit = 1.8 * (Centigrade + 32)

pounds = kilograms * 2.205
kilograms = pounds * 0.454

degrees = 180 * radians / PI
radians = PI * degrees /180

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Calculations for beam spreads, distances, intensities and angles

• The Beam Angle is the angle between the two directions opposed to each other over the beam axis for which the luminous intensity is half that of the maximum luminous intensity.
• The Field Angle is the angle between the two directions opposed to each other over the beam axis for which the luminous intensity is 10% that of the maximum luminous intensity.
• The Beam Spread is a general term, describing the angle between the two directions opposed to each other over the beam axis for which the luminous intensity is a certain fraction of that of the maximum luminous intensity. The amount of that fraction needs to be given in each specific case.

D = throw distance, V = vertical height, H = horizontal distance,
C = focus angle off horizontal, K = focus angle off vertical,
F = beam or field angle of fixture
X = beam spread (beam oval width), Y = beam oval length
mf = beam spread multiplying factor

Footcandles:
Footcandles = Candlepower / (D * D)

Candlepower:
Candlepower = Footcandles * (D * D)
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Beam angle multiplying factor (mf):
mf = 2 * TAN(F / 2)
mf= F*1.8
mf = X / D

Beam angle (F):
F = 2 * ATAN(mf / 2)
F= mf / 1.8
F = 2 * ATAN(X / (2 * D) )
F=X / (D * 1.8)

Beam spread (oval width X if not straight on):
X = D * (2 * TAN(F / 2))
X = F x .018 x D
X = D * mf

Beam oval length (Y) (when beam hits surface at angle):
Y = V * ( TAN(K + F/2) - TAN(K - F/2) )
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Throw distance (D):
D = X / mf
D = SQUARE ROOT( (V * V) + (H * H) )
D = H / COS(C)
D = V / SIN(C)
D = H / SIN(K)
D = V / COS(K)
D = SQUARE ROOT(Candlepower / Footcandles)

Horizontal distance (H):
H = SQUARE ROOT( (D * D) - (V * V) )
H = V / TAN(C)
H = D * COS(C)
H = D * SIN(K)
H = V * TAN(K)

Vertical height (V):
V = SQUARE ROOT( (D * D) - (H * H) )
V = H * TAN(C)
V = D * SIN(C)
V = D * COS(K)
V = H / TAN(K)
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Focus angle off horizontal (C):
C = ATAN(V / H)
C = ASIN(V / D)
C = 90 - ASIN(H / D)
C = 90 - K

Focus angle off vertical (K):
K = ATAN(H / V)
K = ASIN(H / D)
K = 90 - ASIN(V / D)
K = 90 - C
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DMX Address Calculator

DMX:

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