Terminal tap table – LBL Lighting MO Rmt Mag Xfmr 150w 120v/12v User Manual

Page 3

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3

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 120 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
115 - 120 volt, then pick the proper terminal tap using
the "Terminal Tap Table" below to reconnect the second
low voltage wire.

PRIMARY POWER
LINE VOLTAGE

105 - 109

TERMINAL TAP TABLE

110 - 114

115 - 120

121 - 125

TERMINAL TAP
TO BE USED

X4

X3

X2

X1

8

9

10

11

12

13

14

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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10

10

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12

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ELECTRICAL BOX

1C

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