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INSTALLATION GUIDE
Model RM300/RM600 Remote Magnetic Transformer
(For use with Besa low voltage lighting systems only)
RM300-RM600, Rev.4 9-10
IMPORTANT SAFETY INSTRUCTIONS:
A) Read all instructions.
B) Do not conceal or extend exposed conductors through a building wall.
C) Do not install this system in wet locations.
D) For low voltage exposed insulated conductor systems required by 30.1(c) do not install
any part of this system less than 7 feet (2.2m) above the floor.
E) To reduce the risk of fire and burns, do not install this lighting system where the exposed
bare conductors can be shorted or contact any conductive materials.
F) To reduce the risk of fire and overheating, make sure all connections are tight.
G) Do not install any luminaire closer than 6 inches (15.25 cm) from any curtain, or similar combustable materials.
H) Turn off electrical power before modifying the lighting system in any way.
6695 Taylor Rd. Blacklick, OH 43004
www.besalighting.com
Transformer Operation:
The RM300 is a 300 watt magnetic transformer,
designed to power multiple luminaires with a combined
load of 300 watts or less. For example, if using 50 watt
halogen pendants, do not connect more than six (6) total.
The RM600 is simply dual 300W Output, so DO NOT
exceed the 300 watts load per output.
For dimming, an magnetic low voltage dimmer is
recommended.
120V
Transformer
wires
TRANSFORMER INSTALLATION:
1. Remove cover plate at bottom to expose connections.
IMPORTANT:
For RM600, there will be 2 sets of 300W Outputs.
So the steps below must be performed for each set.
For Step #3, each output must use a separate COM
terminal. DO NOT SHARE ONE COM TERMINAL FOR
BOTH OUTPUTS.
2. Pull the correct gauge THHN wire (not provided) between the
transformer and the Electrical Supply Box. Refer to the Wire
Size Chart for appropriate wire selection.
3. Attach one low voltage wire to the COM terminal and the
other to the terminal marked 12 (12V). It is important that
the wires are attached firmly.
4. Connect the 120V input wires to the 120V Transformer wires,
black to black (Hot) and white to white (Neutral). Secure with
wire nuts. Connect supply ground to housing ground nut.
5. Turn on power to Transformer.
6. Measure the output voltage at the connection to monorail with
a voltmeter. Revise the tap connection as needed to achieve
an optimum 11.3 to 11.7 volts.
12V
COM
Neutral
Input
Hot
Input
*This Transformer is equipped with 4 different outputs: 12V, 13V, 14V and 15V.
The 13-15 volt taps should only be used if the voltage at the end of the system is 10.5 volts or less.
The ideal voltage is between 11.3 and 11.7 volts.
Circuit
Breaker
120V Input
NOTE:
RM300 is shown for
instructional purposes.
14V 15V
13V
Low Voltage
Gnd
Low Voltage Output
7. Operate the system for 5 minutes, then verify that the low
voltage connections are running cool to the touch.
8. Replace the cover plate.
Low Voltage Wiring
SAVE THESE INSTRUCTIONS
Electrical
Supply Box
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