Wiring Dc Source Power To The Mast Control Circuit; Wiring Source Power To The Light Circuits - Will Burt Night Scan Powerlite Operating Instructions Manual

NIGHT SCAN POWERLITE, POWERLITE XTREME, AND POWERLITE HDT
5.7.2

Wiring DC Source Power to the Mast Control Circuit

The mast control system requires DC power regardless of what power is required by the lighting
circuits (AC or DC). Source DC power is provided by the installer from the vehicle battery. The
mast system will operate with 12VDC or 24VDC source power. The power supply must be
capable of supplying 14 Amps to the mast at 12VDC (or 10 Amps at 24VDC).
The Base Board contains a 20 Amp fuse to protect the mast control circuits from over-current.
events. The installer is responsible for providing the means to remove/isolate power from the
mast and permit the operator to follow proper lock-out tag-out procedures for maintenance or
troubleshooting.
Power cables for the mast controls are provided by the installer. The cables must:
• Be type SJOOW or equivalent.
• Be 10 AWG (or 6mm
• Have a maximum length for acceptable voltage drop of 70 feet (21 meters).
4. Connect the DC battery power to the +VIN (red or white) and COM (black) connections on
terminal block TB4 on the lower left side of the Base Board.
5.7.3

Wiring Source Power to the Light Circuits

The lighting circuits consist of two (2) independently powered circuits: left and right. Depending
on the light package installed on the unit, the source power for the left and right light circuits will
change to match the light fixtures. Be sure to confirm the installed light fixture voltage
requirements before applying light power to avoid damaging equipment.
It is important to calculate the current draw for the wires in each lighting circuit. To calculate the
current draw for the wires:
• Divide the total watts of the entire mast unit by two (since there are two circuits).
• Divide the result by the voltage.
• This final result is the amperage required for each side light circuit.
Table 5-4 shows some example current calculations. Your mast may have different results based
on the installed light type and number of lights. In Example 1 (Table 5-4), the lights in the system
are a total of 500 watts. This is divided by two to get the watts per side. The result is then divided
by the voltage (12) to get the amps (21 rounded). The wires in this example should be able to
carry at least 21 amps with minimal voltage drop.
TP-4723701-U
MAY 2021
2
) conductors.
OPERATING INSTRUCTIONS
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