LBL Lighting MO Rmt Mag Xfmr 150w 277v/12v - Manual (Page 3)

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COM X1 X2 X3 X4
Install a conduit from the transformer to the electrical
box.
For the best performance, use the "Low Voltage Wire
Size Table" on page 2 to select the wire size.
NOTE: Other wire sizes that comply with electrical
code can be used, but may result in an increased
voltage drop and reduced lamp intensity.
NOTE: The THHN wire sizes are for 3% or less drop
in voltage based on 150 watt loads. Lengths are the
distance from the transformer to the system power
feed connector.
Install the low voltage wires from the transformer to the
electrical power feed box.
Insert one low voltage wire into the terminal marked
"COM" and tighten the screw firmly.
Insert the second low voltage wire into the "X2" terminal
tap (default) and tighten the screw firmly.
Connect the 277 volt power line wires at the panel.
Measure the voltage at the power line wires coming into
the transformer. If the voltage is not in the range of
255 - 277 volt, then pick the proper terminal tap using
the "Terminal Tap Table" below to reconnect the second
low voltage wire.
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CONDUIT
WARNING: - Risk of Fire The terminal taps are not
for boosting the transformer low voltage power, they
are selected to ensure power output voltage based
upon power line conditions. Never use a higher
terminal tap to compensate for voltage drop, this may
overheat the low voltage wires and transformer. It is
recommended to use the wire size as indicated on
"Low Voltage Wire Size Table" on page 2 to avoid
excessive voltage drop.
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ELECTRICAL BOX
1C
PRIMARY POWER
LINE VOLTAGE
230 - 239
TERMINAL TAP TABLE
240 - 254
255 - 277
278 - 290
TERMINAL TAP
TO BE USED
X4
X3
X2
X1