Page Johnny-5 Flashcards
Name 3 other Local 52 Depts
Grip, sound, medic
Video, property, and shopcraft
Who is the president of Local 52?
John Ford
How many bulbs in a super/ultra dino?
36
Regular Dino = 24
Name 4 bulb shapes
Arbitrary
Pear straight
Tubular
Reflector
(flambeau, candle, PAR, ellipsoidal)
Why is a frequency meter important?
Making sure Hz is 60 (+/- 0.2)
Especially when powering HMIs off magnetic ballasts
Name 3 pieces of entertainment equipment used to branch off cable runs
Threefers, siamese, spider box
Tapping T’s
What is the color temp, voltage, and amps of a carbon arc?
5800k
(color temp can be decided by type of carbons burned. Anywhere from 3200-5800)
73 volts
Carbon arc 150 = 150 amps
Brute = 225 amps
Titan = 350 amps
(no ballast, just an inverter called a “grid”)
What is the ampacity of the following?
18/2
12/3
18/2 = 10 amps 12/3 = 20 amps
(#12 = 25 amps)
(Note: 1st number = gauge
2nd = number of current carrying wires inside)
(table on pg 514)
How many 10Ks can you run if the only service available is a 125a, 3 phase, with 44 amps per leg already on the box?-
125 amps per leg - 44 = 81 amps
10,000w/120 volts = 83 amps
YOU CAN RUN ZERO 10Ks
You are shooting on a subway platform where there is only 600v AC available.
The art dept wants to make strip lights wired in series. How many bulbs can be used?
If each bulb is using 120v…
600/120 = 5
How many circuits in a socopex pack?
6 circuits per cable
How many channels in a universe?
512
dmx I think
What is the voltage of a sun gun?
30v
200 according to Pat Fontana
What is a shock block?
A type of GFCI (ground fault circuit interrupter) - special type of circuit protection required around water.
Detects leakage current (current not returning to the power source that could pose a hazard)
provides personnel protection for 208, 240, 480 and 600 V loads
What is ohm’s law?
E = I x R (volts = amps x resistance) (R = E/I)
