Specifications

10 Revision 4 – 1-7-2008 FTB 312-4
amperes per light to determine fast-acting
fuse ratings at the power distribution panel
and to select a system feeder transformer
(if used).
In multiple-unit systems, the master unit
and slave units communicate over the
“master/slave” interconnect wiring. Twist
the wires together at the rate of 12 twists
per foot. The recommended minimum size
for control and signal conductors is #14
AWG.
Flashhead Wiring
The power converter and flashhead are
interconnected by the flashhead cable.
When Flash Technology Part Number
6340, or equivalent cable, is used, the two
may be separated by a distance up to 600
feet. Consult the factory when a greater
separation is necessary. The cable between
the power converter and flashhead requires
five conductors with 600 volts (minimum)
insulation. Two of the conductors must be
#10 AWG. The other three may be #16
AWG (minimum; for mechanical strength)
if you are cabling together individual
wires.
To ensure long-term equipment reliability,
use continuous wiring between the power
converters and their flashheads without
intervening junctions or splices.
Securing the Cable
Flash Technology recommends the
following method for securing the
flashhead cable to a skeletal structure:
1. Run the cable along one of the tower
legs and wrap two full turns of two-
inch Scotchrap™ #50 tape, or the
equivalent, around the cable and tower
leg at regular intervals of about 5 feet
(1.5 meters).
2. Wrap three full turns of one-inch
Scotchrap Filament #890 tape, or the
equivalent, over the Scotchrap #50
tape.
3. Wrap four full turns of two-inch
Scotchrap #50 tape, or the equivalent,
over the Scotchrap Filament #890 tape.
4. Perform steps 1 through 4 also directly
above and below any tower leg flanges
that the cable may cross.
Photocell Wiring
The photocell is supplied with pigtails for
connection to wires that connect to the
power converter. It is connected to the
main panel of the power converter. It may
be located any practical distance from the
power converter. The recommended
minimum wire gauge is #16 AWG.
The photocell terminals on the slave
power converters must be connected from
TB1-1 to TB1-2. (An alternative jumper
may be installed on PCB1 J18-1 to J18-2.)
Also, you connect the master unit (to
which the photocell is directly connected)
to the top flashhead.
Installation Checklist
Complete the following steps before
applying power to the lights.
1. Inspect all equipment for damage.
2. Verify the received equipment against
the packing list to ensure
completeness.
3. Power Converter Mounting. Position
and mount each unit correctly,
allowing adequate clearance for
opening the covers. Use the following
checks:
1. Ensure that the case is mounted
upright, is water tight, and
grounded to the site grounding
system.
2. Check hardware to ensure that all
mounting hardware is tight.