COLOER 300W Low Voltage Transformer User Manual
- June 14, 2024
- COLOER
Table of Contents
COLOER 300W Low Voltage Transformer
PRODUCT INFORMATION
MODEL NO.: COT705S 300W Low Voltage Transformer
Features
- Power : 300W
- Input :120VAC,60Hz
- Output Voltage :12-15V AC
- Heavy-duty 304 stainless steel
- Stainless steel standard finish
- Lifetime warranty
Package Contents
- Transformer
Product Dimensions
IMPORTANT SAFETY INSTRUCTIONS
WARNING
(for conduit connected POWER UNIT)
RISK OF SHOCK. Install power unit at least 5 feet from a pool or spa and at
least 10 feet from a fountain. Where the power unit is installed within 10
feet of a pool or spa, connect the unit to a GFCI-protected branch circuit.
WARNING
(for Power Supply Cord connected POWER UNITE)
RISK OF ELECTRIC SHOCK. Install a power unit at least 5 feet from a pool, spa,
or fountain Where the power unit is installed (a) indoors within 10 feet of a
pool, spa, or fountain, or (outdoor, connect the power unit to a receptacle
protected by a GFC.
- THIS POWER UNIT MUST BE CONNECTED TO A COVERED GFCI RECEPTACLE MARKED ” WET LOCATION WHILE IN USE
- CAUTION : FOR USE ONLY ON A BRANCH CIRCUIT PROTECTED BY A CLASS A TYPE GROUND FAULT CIRCUIT INTERRUPTER
- FOR USE WITH LANDSCAPE LIGHTING SYSTEMS ONLY LANDSCAPE LIGHTING SYSTEMS ARE FOR OUTDOOR USE ONLY (NOT FOR USE IN DWELLING UNITS
- THIS DEVICE IS ACCEPTED AS A COMPONENT OF A LANDSCAPE LIGHTING SYSTEM WHERE
- THE SUITABILITY OF THE COMBINATION SHALL BE DETERMINED BY CA OR LOCAL INSPECTION AUTHORITIES HAVING JURISDICTION
- DO NOT CONNECT TWO OR MORE POWER SUPPLIES IN PARALLEL
- DO NOT MOUNT POWER SUPPLY OR FIXTURES WITHIN 3 METERS (10 FEET) OF A SWIMMING POOL OR SPA
- DO NOT USE AN EXTENSION CORD WITH THIS POWER SUPPLY
SIZING TRANSFORMER
The total wattage(W) – or volt-amps (VA) for LED – of all of the fixtures operated by this transformer must not exceed the wattage rating of the transformer
-
If you are powering halogen lamps
Calculate the load by adding the wattage of the lamps in the system. Make sure the load does not exceed the wattage rating of the transformer. -
If you are powering LED lamps or fixtures
calculate the load by adding the volt/amp (VAlvalues of all of the lamps in the system.
VA is calculated using the following formula:
If the power factor of the LEDs is unknown, use 0.7 as the value for this calculation. Once you have determined the total wattage or total VA value of the run, make sure that the transformer that you have selected has excess capacity if new fixtures are connected to the system at a later date.
Example:
15 fixtures are each operating a 3W LED lamp with an unknown PF value.
A transformer with a maximum wattage rating of 150W can be utilized.
MOUNT THE TRANSFORMER UNIT
- Remove the transformer door for easy access
- Find a solid, flat surface to mount the transformer in a location:
- That is at least 12 inches between the terminals and ground level with wire terminals facing down.
- Six feet or fewer from a 120V supply circuit that is protected by a class A type ground fault circuit interrupter.
- Insert load-bearing screws or wall anchors into pre-drilled holes that align with the corresponding keyhole slots on the transformers mounting brackets.
- Secure the transformer’s keyhole slots on the mounting brackets to the load-bearing-screws Wall anchors.
MOUNT THE TRANSFORMER UNIT
- Remove the bottom plate from the transformer.
- Using a flat-head screwdriver, adjust the common tap and appropriate low-voltage tap(s) (labeled 12V-15V or 12V-22V) on the terminal block to accept secondary wires.
- Run the secondary wire cables through the knockouts in the bottom plate.
- Separate the wires from each pair and strip both approximately one inch.
- Connect one wire from each pair to the common tap and the other wire to the appropriate low-voltage tap.
- Secure the wires to the taps by tightening the common tap and the low-voltage taps with a flathead screwdriver.
CHECK VOLTAGE AT EACH FIXTURE
It is very important that the secondary voltage provided to each fixture is
within the input voltage range of the lamp or fixture. Halogen lamps and some
LEDs have an input voltage rating of 12V. If the specified input voltage range
is 12V, the input voltage provided to the fixture must be between 11V and
12V.I f the voltage at the socket exceeds 12V, the light output of the lamp
will be higher but the average rated life will be lower. If the voltage at the
socket is lower than 11V, the light output will be lower, and the average
rated life will be higher. Many LEDs have an input voltage range of 10V-15V,
or 10V-18V For LEDs with input voltage ranges, input voltage supplied to the
lamp within that range is acceptable.
- Plug the transformer into a covered 120V GFCI receptacle.
- Switch on the transformer to provide secondary voltage to the fixtures.
- Using a voltmeter, check the voltage at each fixture.
- Make sure that the voltage at each fixture is within the specified input voltage range of the lamps or integrated LED fixtures.
- If the measured voltage falls outside of the specified input voltage range of the lamps or integrated LED fixtures, adjust the voltage to the acceptable range by moving the wire to a higher/lower voltage tap.
CHECK OUTPUT AMPS
After checking the voltages on the run, use a clamp-on meter to measure the
output current on the low-voltage cable at the transformer for each circuit.
Make sure that the output current of the circuit is below the maximum rated
Amperage.
DETERMINE INPUT AMPS
This unit is provided with a looped wire that is attached to the optional
photocell plug. Use a clamp-on meter around the looped wire to measure the
input current. Apply the clamp on the amp meter around the looped wire to get
an input current measurement. Make sure that the input current of the system
is below the maximum rated input current:
Determine System Load and Voltage Drop
Low voltage landscape system voltage drop occurs along the secondary wire and
is affected by the distance of the run, the total wattage of the system, and
the gauge of the wire. As a result, fixtures at the end of the system’s run
will receive lower voltage than fixtures near the beginning of the run Voltage
loss can be minimized in different ways. Low voltage wire is necessary to run
from the secondary power on the transformer to the fixtures it will operate in
the system. Low voltage wire is measured by gauges. Thinner wire has a higher
number and has a lower maximum load. The lower the wire number, the thicker
the wire and the more current it can carry. Consequently, thicker wire reduces
voltage drop so it is suggested that 8/2, 10/2, or 12/2 wire is used for low-
voltage landscape lighting systems. Below is a table that lists the cable
constant value of different wire gauges:
Example:
A 75 ft. run with 100W load using 12/2 wire Voltage Drop=(75 x 100 x
2)=7500=2V. This means that a 14V tap is needed to deliver 12V to the final
fixture on the run. One way to minimize voltage drop in this example is to
spread the load to separate wire runs. Wiring the system effectively is
another way to minimize voltage drop.
customersupport@coloer.com / 626-699-4666
THANK YOU FOR CHOOSING COLOER
If you have any installation problems or need help Call us! 626-699-4666
Please do not hesitate to contact us: customersupport@coloer.com
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