FTS 371 USER MANUAL
Flash Technology, LLC
Revision 4 – 9/7/2021
13
SECURING THE CABLE ( 2-3-4 TAPE METHOD)
Flash Technology provides the material for securing the beacon cable to a skeletal structure with the following
technique.
NOTE!
Always adhere to local electrical codes that could supersede this technique.
Table 2.1 – 2-3-4 Tape Method
Step 1
Step 2
Step 3
Run the cable along 1 of the tower legs.
Wrap 2 full turns of 2-inch Scotchrap™
#50 tape (or the equivalent) around the
cable and tower leg.
Wrap 3 full turns of 1-inch
Scotchrap Filament #890 tape
over the Scotchrap #50 tape.
Wrap 4 full turns of 2-inch
Scotchrap #50 tape over the
Scotchrap Filament #890 tape.
NOTE!
Ensure there is at least a 4-5 foot (1.5 meters) separation between taping sections per NEC.
FLANGE STRESS RELIEF
Secure the cable above and below each flange approximately 6 inches by performing steps 1 through 3. Allow a 1-
inch to 3-inch separation from the flange and the cable.
AM “HOT” TOWER WIRING
On AM “hot” towers, wire the beacon, markers and controller as described in this section except for the following:
On the cable between the controller and beacon, do not connect the ground conductor in the controller or the
beacon.
FLASHHEAD/BEACON WIRING
For AC powered systems, see beacon wiring in
(page 24) and typical installation diagrams in
25) and
(page 26). In the beacon, connect the black wire to PCB terminal L1 and white wire to L2/N.
Connect the green ground wire directly to the beacon base using the screw with integrated star washer located
near the cable entry point.
For DC powered systems, see beacon wiring in
(page 29) and typical installation diagrams in
(page 30) and
(page 31). In the beacon, connect the red wire to PCB terminal DC+ and black wire to DC-.
Connect the blue ground wire directly to the beacon base using the ground terminal installed in the beacon base
located near the cable entry point.
