A theatre has a 75 dimmer, one to one, lighting system with 2.4k dimmers (2500 watts). The light plot calls for source f

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A theatre has a 75 dimmer, one to one, lighting system with 2.4kdimmers (2500 watts). The light plot calls for source fourinstruments lamped at 750 watts and fresnels lamped at 575 watts.You have both 12 gauge cables with a capacity of 20 amps and 14gauge cables with a capacity of 15 amps.
a. How many fresnels can the lighting system accommodate on eachdimmer?
b. How many source fours can the lighting system accommodate oneach dimmer?
c. The light plot calls for 4 fresnels to be circuited into thesame dimmer. To use the fewest cables, which cable(s) do you useand why?
d. The plot calls for 4 source fours to be circuited into thesame dimmer. To use the fewest cable(s) do you use and why?
e. The plot calls for 3 source fours to be circuited into thesame dimmer and only 14 gauge cables are available. How does thisget circuited safely?
f. Can a 14 gauge cable handle a three-fer (a circuit that cantake 3 lights) of 2 fresnels and 1 source four?
g. If fresnels lamped at 575 watts could be two-fer, three-fer,or four-fer and all cables are 12 gauge, what is the max number offresnels this system could safely handle?
h. If source fours lamped at 750 watts could be two-fer,three-fer, or four-fer and all cables are 14 gauge, what is the maxnumber of source fours this system could safely handle?
i. The light plot calls for 20 fresnels, 15 source fours, 15two-fer fresnels, and 20 two-fer source fours for a total of 105instruments. Can the lighting system accommodate the lightplot?
j. Based on the answer to i, can the lighting designer addsource fours or do they need to subtract source fours? How manysource fours can be added or need to be subtracted?

A Theatre Has A 75 Dimmer One To One Lighting System With 2 4k Dimmers 2500 Watts The Light Plot Calls For Source F 1 (1.21 MiB) Viewed 41 times

Design Power Formula You arrive at a US theatre and find that they have a 75 dimmer, one to one, lighting system with 2.4k dimmers (2,400 watts). The light plot calls for Source Four instruments lamped at 750 watts and Fresnels lamped at 575 watts. You have both 12 gauge cables with a capacity of 20 amps and 14 gauge cables with a capacity of 15 amps. Please answer the following questions and show your work. 1. How many Fresnels can the lighting system accommodate on each dimmer? 2. How many source Fours can the lighting system accommodate on each dimmer? 3. The light plot calls for 4 Fresnels to be circuited into the same dimmer. To use the fewest cables, which cable(s) do you use and why? 4. The plot calls for 4 source fours to be circuited into the same dimmer. To use the fewest cables, which cable(s) do you use and why? 5. The plot calls for 3 source fours to be circuited into the same dimmer and only 14 gauge cables are available. How does this get circuited safely?

Power Formula 6. Can a 14 gauge cable handle a three-fer of 2 Fresnels and 1 Source Four? 7. If Fresnels lamped at 575 watts could be two-fer, three-fer, or four-fer and all cables are 12 gauge, what is the max number of Fresnels this system could safely handle? 8. If source fours lamped at 750 could be two-fer, three-fer, or four-fer and all cables are 14 gauge, what is the max number of source fours this system could safely handle? 9. The light plot calls for 20 Fresnels, 15 Source Fours, 15 two-fer Fresnels, and 20 two-fer Source Fours for a total of 105 instruments. Can the lighting system accommodate the light plot? 10. Based on the answer to question #9, can the lighting designer add Source Fours or do they need to subtract Source Fours? How many source Fours can be added or need to be subtracted?