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A PRACTICAL GUIDE TO STAGE LIGHTING
Figure 5.25 shows the circuitry and dimmer
spreadsheet for Hokey. No house circuits or dimmers
are going to be used, so this spreadsheet is rela-
tively simple. This version of the document has been
constructed to monitor the amount of circuitry and
dimming that will be required for the rental lighting
package. The circuits and dimmers are listed across
the top rows of the document, while the positions
are generally shown down the left-hand column. The
next two columns of circuitry listed for each posi-
tion will result in cable runs to each hanging posi-
tion. The first column will indicate the number of
single 575 watt circuitry runs, while the next col-
umn shows any 1200 watt circuitry runs (if any two-
fering is required). The right-hand columns should
reflect the circuitry totals, but will show anomalies
if any circuits are combined at the dimmer racks. At
the present time, in order to provide some kind of
structure, 192-1200 watt dimmers are shown, along
with a backup rack of 48-2400 watt dimmers. While
the overall size of the light plot isn’t yet known, this
should address the needs of the show and still stay
within the power distribution provided in the the-
atre. One the plot gets more defined, the number,
size, or distribution of the dimmers may change in
order to make the plot more compact, less expensive,
or easier to install.
Armed with these worksheets and the core design
documents, the system construction can now take
place. When questions or constraints surface dur-
ing the plotting process, this collection of documents
should ideally provide enough information to allow
informed negotiation to take place, and clear decisions
can be made. As the systems are defined and applied
to different hanging locations, for example, it may
become apparent that there’s not enough room for
six colors of backlight on one electrical batten. One
of the colors may need to be a mix of the other two,
converted to a different overhead system, reduced to
a single special, or eliminated altogether. Which one
needs to stay or move? Check the systems and spe-
cials sheet. Can one system be controlled with fewer
channels or does it need to be more “broken apart,”
in order to have the right amount of light turned off
in that particular cue? Refer to the preliminary magic
sheet. Are there enough plugs on that raceway to sep-
arate control of each light in the system? Better take
a look at the circuitry and dimmer spreadsheet. This
part of the process is inevitable, and it’s part of the
job. It will also take place later, once the final prelimi-
nary light plot is taking shape.
At the present time, concentration will now be
directed to the construction of the lighting systems.
The worksheets will be discussed in more detail later
in this chapter and the next.
Reference Documents While Plotting
In addition to the worksheets and the core design doc-
uments, when the lighting systems are constructed,
everything regarding the show should be available.
Experience has shown that, no matter what unneces-
sary piece of information is neglected while the systems
are being created, that will be the piece of informa-
tion that potentially stalls the process. That said, the
above documents are the most closely monitored, ref-
erenced, and updated throughout the process. After
that, the list is about what would be expected:
•Allshowrelatedresearchandpreliminary
material.
•Anypreexistinggroundplansofthespace
(regardless of scale).
•Anypreexistingsectionsofthespace(regardless
of scale).
•Anyphotographsorvideoofthespace.
•Themeasurementsandnotesfromtheadvance
visits.
•Thetechspecs.
Illustration Notes
In order to provide visual clarity, the construction of
the backlight system will be shown without any other
instruments on the drawing. Doing so allows the
viewer to see the system in its “pure” state, producing
HOKEY CIRCUITRY & DIMMER SPREADSHEET V1
Circuits
in light plot
19248
POSITION
575 1.2K TOTAL 1.2K 2.4K NOTES
Truss 0
SL Bx Bm 0
SR Bx Bm 0
1 Electric 0
2 Electric 0
3 Electric 0
4 Electric 0
5 Electric 0
6 Electric 0
Pit 0
Booms L0
Rover L0
Booms R0
Rovers R0
Groundrow 0
Total circuits plot: 000
Company switch is DSL. 1.2K 2.4K
Dim
Figure 5.25 The Circuitry and Dimmer Spreadsheet for
Hokey, Version 1

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